tokenpocket官方网址是多少|sugar crash

作者: tokenpocket官方网址是多少
2024-03-13 04:03:23

Sugar Crash: Symptoms and Treatments for Reactive Hypoglycemia

Sugar Crash: Symptoms and Treatments for Reactive Hypoglycemia

Health ConditionsFeaturedBreast CancerIBD MigraineMultiple Sclerosis (MS)Rheumatoid ArthritisType 2 DiabetesSponsored TopicsArticlesAcid RefluxADHDAllergiesAlzheimer's & DementiaBipolar DisorderCancerCrohn's DiseaseChronic PainCold & FluCOPDDepressionFibromyalgiaHeart DiseaseHigh CholesterolHIVHypertensionIPFOsteoarthritisPsoriasisSkin Disorders and CareSTDsDiscoverWellness TopicsNutritionFitnessSkin CareSexual HealthWomen's HealthMental Well-BeingSleepProduct ReviewsVitamins & SupplementsSleepMental HealthNutritionAt-Home TestingCBDMen’s HealthOriginal SeriesFresh Food FastDiagnosis DiariesYou’re Not AlonePresent TenseVideo SeriesYouth in FocusHealthy HarvestThrough An Artist's EyeFuture of HealthPlanHealth ChallengesMindful EatingSugar SavvyMove Your BodyGut HealthMood FoodsAlign Your SpineFind CarePrimary CareMental HealthOB-GYNDermatologistsNeurologistsCardiologistsOrthopedistsLifestyle QuizzesWeight ManagementAm I Depressed? A Quiz for TeensAre You a Workaholic?How Well Do You Sleep?Tools & ResourcesHealth NewsFind a DietFind Healthy SnacksDrugs A-ZHealth A-ZConnectFind Your Bezzy CommunityBreast CancerInflammatory Bowel DiseasePsoriatic ArthritisMigraineMultiple SclerosisPsoriasisFollow us on social mediaHealthlineHealth ConditionsDiscoverPlanConnectSubscribeReactive Hypoglycemia: How to Spot and Treat a Sugar CrashMedically reviewed by Vincent J. Tavella DVM, MPH — By Kristeen Cherney on January 23, 2019Hypoglycemia without diabetesCausesDiagnosisSymptomsTreatmentsWhen to see a doctorTakeawayWhat is it?It’s common to associate hypoglycemia, or low blood sugar, with diabetes. However, hypoglycemia, also called a sugar crash, actually isn’t exclusive to diabetes. Reactive hypoglycemia, or postprandial hypoglycemia, occurs within four hours of eating a meal. This differs from fasting hypoglycemia, or a sugar crash that happens as a result of fasting.The exact cause of reactive hypoglycemia isn’t known. Most experts think it’s related to the foods you eat and the time it takes for these foods to digest. If you have frequent sugar crashes and don’t have diabetes, it may be time to talk to your doctor about dietary changes and potential treatments.Hypoglycemia without diabetesReactive hypoglycemia is one of the two types of non-diabetes-related hypoglycemia. The other type is fasting hypoglycemia. According to the Hormone Health Network, having hypoglycemia without having diabetes is relatively rare. Most people with frequent sugar crashes either have diabetes or prediabetes.Still, it’s possible to have hypoglycemia without having diabetes. All cases of hypoglycemia are related to low blood sugar, or glucose, in the body.Glucose is procured from the foods that you eat, not just sugary foods. You can get glucose from any source of carbohydrates, including fruits, vegetables, and grains.Glucose is important because it’s your body’s main source of fuel. Your brain also depends on glucose as its primary fuel source, which explains the weakness and irritability that often occur during sugar crashes.In order to deliver glucose to the muscles and cells in your body, as well as maintain proper levels of glucose in the bloodstream, your body relies on a hormone called insulin. This hormone is made by the pancreas.Insulin issues are the hallmarks of diabetes. In type 2 diabetes, your body doesn’t have enough insulin to regulate blood glucose. You may also have insulin resistance. In type 1 diabetes, the pancreas doesn’t make insulin at all.Still, insulin problems aren’t exclusive to diabetes. When you have hypoglycemia, you have too much insulin circulating in the blood. You may start feeling the effects of a sugar crash when your glucose reading reaches 70 mg/dL or lower. This is the threshold for hypoglycemia, according to the American Diabetes Association.CausesMost people with reactive hypoglycemia don’t appear to have any other underlying causes. There are some known risk factors for reactive hypoglycemia. These include:Prediabetes. This is the first stage before the full development of diabetes. During prediabetes, your body may not be making the right amount of insulin, which is contributing to your sugar crashes.Recent stomach surgery. This can make it difficult to digest food. The foods you eat may pass through the small intestine at a more rapid rate, causing subsequent sugar crashes.Enzyme deficiencies. Though rare, having a stomach enzyme deficiency can prevent your body from properly breaking down the foods you eat.DiagnosisIn most cases, reactive hypoglycemia is diagnosed based on your symptoms. It’s important to keep a food diary and make note of your symptoms so your doctor can see the timing.If severe or frequent hypoglycemia is suspected, your doctor may run blood tests. One important test is a blood glucose reading. Your doctor will prick your finger and use a blood glucose meter to get a reading. True hypoglycemia is measured at about 70 mg/dL or lower, according to the American Diabetes Association.Other tests that can help diagnose hypoglycemia include an oral glucose tolerance test (OGTT) and a mixed meal tolerance test (MMTT). You’ll drink a glucose syrup for the OGTT or a beverage with a mix of sugar, protein, and fat for the MMTT.Your doctor will check your blood sugar before and after consuming these beverages to determine any differences.Additional testing may be needed if your doctor suspects prediabetes, diabetes, or other conditions that might be raising your insulin production. SymptomsSymptoms of reactive hypoglycemia may include:lightheadednessdizzinessshakinganxietyconfusionirritabilitysweatingweaknesssleepinesshungerfaintingThese symptoms typically go away after eating 15 grams of a carbohydrate. TreatmentsMost cases of reactive hypoglycemia don’t require medical treatment. Even if you’ve had stomach surgery or have another risk factor for sugar crashes, dietary approaches tend to be the preferred treatment measure for this condition. If you start experiencing symptoms of a sugar crash, the short-term solution is to eat 15 grams of a carbohydrate. If your symptoms don’t improve after 15 minutes, eat another 15 grams of a carbohydrate.For frequent sugar crashes, you’ll likely need to make some long-term changes to your diet. The following can help:Eat smaller, more frequent meals. Snack throughout the day, or about every three hours.Avoid high-sugar foods. These include processed foods, baked goods, white flour, and dried fruits.Eat a balanced diet. Your diet should include all the essential macronutrients, including proteins, carbohydrates, and healthy fats. Plant-based foods should be No. 1 in your diet overall.Limit your alcohol intake. When you drink alcohol, be sure to have something to eat at the same time.Avoid caffeine. If possible, switch to decaffeinated coffee or herbal teas.Try to quit smoking. This should be done gradually under the guidance of a doctor.While you might see several websites for hypoglycemia “diets,” the truth is that there’s no one-size-fits-all diet to treat sugar crashes. Start by making long-term changes to your diet, such as the suggestions listed above. From there, you might find it helpful to keep a food diary to help you pinpoint any foods that could be affecting your blood sugar. When to see a doctorDietary changes can help you manage and prevent sugar crashes. However, if you’ve had surgery or are managing ulcers, you may need to see your doctor for additional treatments. You should also see your doctor if you continue to have sugar crashes despite dietary changes. Your doctor may check for diabetes or other underlying health conditions. When blood glucose isn’t controlled, it can lead to complications, including:heart diseasekidney diseasenerve damagefoot problemseye damagedental diseasestrokeThe bottom lineOnce you’ve identified reactive hypoglycemia as the cause of your sugar crashes, dietary changes are usually enough to help prevent future episodes and symptoms. However, if you continue to have frequent sugar crashes despite changes to your diet, talk to your doctor. Last medically reviewed on January 23, 2019How we reviewed this article:SourcesHistoryHealthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical associations. We avoid using tertiary references. You can learn more about how we ensure our content is accurate and current by reading our editorial policy.Castro MR. (2016). Reactive hypoglycemia: What can I do?https://www.mayoclinic.org/diseases-conditions/diabetes/expert-answers/reactive-hypoglycemia/faq-20057778Diabetes overview. (2016).https://www.niddk.nih.gov/health-information/diabetes/overview/what-is-diabetesEckert-Norton M, et al. (2013). Non-diabetic hypoglycemia.https://academic.oup.com/jcem/article/98/10/39A/2833336Hypoglycemia (low blood sugar). (2018).http://www.diabetes.org/living-with-diabetes/treatment-and-care/blood-glucose-control/hypoglycemia-low-blood.htmlNondiabetic hypoglycemia. (2017).https://www.hormone.org/diseases-and-conditions/diabetes/non-diabetic-hypoglycemiaNutrition management of low blood sugar without diabetes (postprandial syndrome and reactive hypoglycemia). (2016).https://www.uwhealth.org/healthfacts/nutrition/396.pdfRuggiero R. (n.d.). The importance of individualizing your hypoglycemia diet.https://hypoglycemia.org/diet/Our experts continually monitor the health and wellness space, and we update our articles when new information becomes available.Current VersionJan 23, 2019Written ByKristeen Cherney, PhDEdited ByAllison TsaiMedically Reviewed ByVincent J. Tavella, DVM, MPHShare this articleMedically reviewed by Vincent J. Tavella DVM, MPH — By Kristeen Cherney on January 23, 2019related storiesDealing with HypoglycemiaDealing with HypoglycemiaCan Anorexia Cause Hypoglycemia?Relative Hypoglycemia: Everything You Need To KnowIatrogenic Hypoglycemia: What Does This Mean?Read this nextDealing with HypoglycemiaMedically reviewed by Peggy Pletcher, M.S., R.D., L.D., CDEHypoglycemia is low blood sugar. It mostly affects people with diabetes, but others may experience it, too. Learn how to identify, treat, and prevent…READ MOREDealing with HypoglycemiaMedically reviewed by Marina Basina, M.D.If you have diabetes, your concern isn’t always that your blood sugar is too high. Your blood sugar can also dip too low, a condition known as…READ MORECan Anorexia Cause Hypoglycemia?Medically reviewed by Kelly Wood, MDAnorexia can lead to low blood sugar (hypoglycemia), especially in people with a BMI under 15. Very low blood sugar is a medical emergency.READ MORERelative Hypoglycemia: Everything You Need To KnowMedically reviewed by Angela M. Bell, MD, FACPRelative hypoglycemia happens when your body is used to high blood glucose levels, and you blood sugar drops by about a third of its average level…READ MOREIatrogenic Hypoglycemia: What Does This Mean?Medically reviewed by Marina Basina, M.D.This form of hypoglycemia may happen if you take too much medicine or don't eat enough food. Iatrogenic hypos can happen in healthcare settings or…READ MOREDrug Induced Hypoglycemia: What You Need to KnowPeople with diabetes may experience hypoglycemia due to the condition itself or its treatments. Even people who don’t have diabetes may experience…READ MORECan Exercise Cause Hypoglycemia?Medically reviewed by Angela M. Bell, MD, FACPPeople without diabetes or other medical conditions may still experience hypoglycemia during or after exercise and physical activity.READ MOREHypoglycemia and Hypothermia: How Are They Related?Medically reviewed by Alana Biggers, M.D., MPHHypothermia can be a sign of severely low blood sugar levels. This happens in response to very low levels of glucose in the central nervous system…READ MORERefractory Hypoglycemia: What Does This Mean?Medically reviewed by Kelly Wood, MDLong-lasting episodes of low blood sugar that do not respond to standard treatment are known as refractory hypoglycemia. Causes may can include excess…READ MOREWhipple Triad: What Does This Mean for Symptoms of Hypoglycemia?Medically reviewed by Kelly Wood, MDHypoglycemia is when your blood sugar falls below typical levels. Whipple triad refers to three criteria used to help diagnose hypoglycemia…READ MOREAbout UsContact UsPrivacy PolicyPrivacy SettingsAdvertising PolicyHealth TopicsMedical AffairsContent IntegrityNewsletters© 2024 Healthline Media LLC. All rights reserved. Our website services, content, and products are for informational purposes only. Healthline Media does not provide medical advice, diagnosis, or treatment. See additional information. See additional information.© 2024 Healthline Media LLC. All rights reserved. Our website services, content, and products are for informational purposes only. Healthline Media does not provide medical advice, diagnosis, or treatment. See additional information. See additional information.AboutCareersAdvertise with usOUR BRANDSHealthlineMedical News TodayGreatistPsych CentralBezzy

Blood Sugar Crash: Symptoms, Causes, and Treatment

Blood Sugar Crash: Symptoms, Causes, and Treatment

Menu

Health A-Z

COVID-19

Arthritis

Type 2 Diabetes

Heart Disease

Digestive Health

Multiple Sclerosis

View All

Prevention & Treatment

COVID-19 Vaccines

Vaccines

First Aid

Surgery

Occupational Therapy

Healthy Aging

View All

Health Care

Health Insurance

Public Health

Patient Rights

Disability

Caregivers & Loved Ones

End of Life Concerns

View All

News

COVID-19

Health News

Tools & Resources

Thyroid Test Analyzer

Doctor Discussion Guides

Hemoglobin A1c Test Analyzer

Lipid Test Analyzer

Complete Blood Count (CBC) Analyzer

What to Buy

About Us

Editorial Process

Meet Our Medical Expert Board

Search

Search

GO

Health A-Z

COVID-19

Arthritis

Type 2 Diabetes

Heart Disease

Digestive Health

Multiple Sclerosis

View All

Prevention & Treatment

COVID-19 Vaccines

Vaccines

First Aid

Surgery

Occupational Therapy

Healthy Aging

View All

Health Care

Health Insurance

Public Health

Patient Rights

Disability

Caregivers & Loved Ones

End of Life Concerns

View All

News

COVID-19

Health News

View All

More in Type 2 Diabetes

Symptoms

Causes & Risk Factors

Diagnosis & Treatment

Living With

Hypoglycemia

Nutrition & Weight Loss

A1C Test Analyzer

View More

Tools & Resources

Thyroid Test Analyzer

Doctor Discussion Guides

Hemoglobin A1c Test Analyzer

Lipid Test Analyzer

Complete Blood Count (CBC) Analyzer

What to Buy

About Us

Editorial Process

Privacy Policy

Contact Us

Verywell Health's content is for informational and educational purposes only. Our website is not intended to be a substitute for professional medical advice, diagnosis, or treatment.

Ⓒ 2024 Dotdash Media, Inc. — All rights reserved

Type 2 Diabetes

What Is a Blood Sugar Crash?

By

Kimberly Charleson

Updated on June 20, 2023

Medically reviewed by

Kelly Wood, MD

Print

Table of Contents

View All

Table of Contents

What It Is

How It Feels

Diabetic Hypoglycemia

Non-Diabetic Hypoglycemia

Tips

A blood sugar crash refers to a sudden drop in blood sugar (glucose) levels. Known medically as hypoglycemia, a blood sugar crash can make you feel anxious, irritable, dizzy, or shaky. While anyone can experience hypoglycemia, it’s more common in people with diabetes.

This article explains what a blood sugar crash is. It discusses the different causes of blood sugar crashes, what a blood sugar crash feels like, and how to prevent and treat hypoglycemia.

VioletaStoimenova / Getty Images

What Is a Blood Sugar Crash?

A blood sugar crash, or hypoglycemia, occurs when blood glucose levels go below 70 milligrams per deciliter (mg/dL). It typically occurs in response to an imbalance of insulin and glucose. Insulin, a hormone produced in the pancreas, transports glucose from the bloodstream into cells to be used for energy.

When working properly, the pancreas releases the right amount of insulin in response to sugar and carbohydrate intake. However, this process can go awry.

In some cases, consuming carbohydrates triggers the release of too much insulin, causing what is known as reactive hypoglycemia. In people with diabetes, taking insulin or medications that stimulate insulin production can also cause a blood sugar crash.

A low blood sugar level triggers the release of epinephrine, also known as adrenaline, the fight-or-flight hormone. It is what can cause the symptoms of hypoglycemia.

What Does a Blood Sugar Crash Feel Like?

Each person may react to hypoglycemia differently. The symptoms of a blood sugar crash can be mild to severe and include the following:

Shakiness

Nervousness or anxiety

Sweating, chills, and clamminess

Irritability or impatience

Confusion

Fast heartbeat (tachycardia)

Lightheadedness or dizziness

Hunger

Nausea

Color draining from the skin (pallor)

Sleepiness

Weakness or lack of energy

Blurred or impaired vision

Tingling or numbness in the lips, tongue, or cheeks

Headaches

Coordination problems, clumsiness

Nightmares or crying out during sleep

Seizures

If your blood sugar level is low and continues to drop, your brain does not get enough glucose and stops functioning as it should. This can lead to blurred vision, difficulty concentrating, confusion, slurred speech, numbness, and drowsiness.

If blood sugar stays low for too long, starving the brain of glucose, it may lead to seizures, coma, and very rarely death. 

Studies have shown that people are unaware of the symptoms and seriousness of hypoglycemia. One study showed that 75% of hypoglycemia episodes detected by a continuous glucose monitor were not recognized by patients.

Diabetic Blood Sugar Crash

People with diabetes have to check their blood sugar levels often and practice healthy habits to keep their blood sugar levels in check. Unfortunately, blood sugar crashes can happen for reasons out of your control.

Causes

Low blood sugar is common in people living with type 1 diabetes, but it can also occur in people with type 2 diabetes who are taking insulin or certain medications. The average person with type 1 diabetes may experience up to two symptomatic episodes of mild low blood sugar per week.

Common causes of blood sugar crashes in people with diabetes include too much insulin or an unbalanced diet:

Medication: Since diabetes medications are taken to lower blood sugar, they may lower the blood sugar levels too much and lead to hypoglycemia. Accidentally injecting the wrong insulin type or injecting it directly into the muscle (instead of just under the skin) can also cause low blood sugar.

Not enough carbs: If someone with diabetes isn’t eating enough food or lowered their glucose intake significantly, levels will drop. Eating fewer carbohydrates than usual without reducing the amount of insulin taken can contribute to hypoglycemia.

Insulin timing: Timing insulin doses can be tricky due to the varying rate of carbs digestion from liquids or solids. Liquids are absorbed much faster than solids, so timing the insulin dose to the absorption of glucose from foods can be tricky. The composition of the meal—the amount of fat, protein, and fiber—can also affect the absorption of carbohydrates.

Exercise: The body uses up glucose faster during exercise. Too much insulin or not enough carbs combined with exercise can cause a blood sugar crash.

Why People With Diabetes Should Avoid Meal Skipping

Treatment

The main treatment for a mild sugar crash is the 15-15 rule. It helps slowly bring blood sugar levels up.

It’s never a good idea to start bingeing on sugar to raise blood sugar levels. This can backfire by causing the blood sugar to spike.

Instead, according to the 15-15 rule, you should eat 15 grams of carbohydrates to raise your blood sugar and check your blood sugar level 15 minutes after. If it’s still below 70 mg/dL, have another serving.

Food or supplements that contain 15 mg of carbohydrates include:

Glucose tabletsGel tube1/2 cup of juice or regular soda1 tablespoon of sugar, honey, or corn syrupHard candies, jellybeans, or gumdrops (check the food label for how many to consume)

Complex carbohydrates or foods that contain fats along with carbs (like chocolate) can slow the absorption of glucose and should not be used to treat an emergency low.

Keep track of your symptoms and low blood sugar episodes and tell your healthcare provider. If you’re experiencing severe symptoms or symptoms aren’t improving with treatment, you should call your healthcare provider or 911 immediately.

Prevention

Monitoring your blood sugar is the tried and true method for preventing hypoglycemia. The more a person checks blood sugar, the lower their risk of hypoglycemia. This is because you can see when blood sugar levels are dropping and treat it before it gets too low.

If you have diabetes, check your blood sugar at the following times:

Before and after mealsBefore and after exercise (or during if it’s a long or intense session)Before bedIn the middle of the night, after intense exercise

You should check your blood sugar more often if you made certain changes, such as a new insulin routine, a different work schedule, an increase in physical activity, or travel across time zones.

What Is a Continuous Glucose Monitor?

Besides a glucometer, you can also monitor your blood sugar with a continuous glucose monitor. These monitors are devices connected to the body all day, allowing quick access to information anytime you need it. These monitors help prevent surprise highs or lows in blood sugar and address them quickly.

Other things you can do to avoid a blood sugar crash if you have diabetes include:

Eating a balanced dietAvoiding sugary foods and drinks outside of mealtimesEating small portionsAvoiding restricting or cutting out full food groupsPlanning aheadKeeping your healthcare provider in the know

How to Use a Glucometer

Non-Diabetic Blood Sugar Crash

Non-diabetic blood sugar crashes are considered much rarer than diabetic blood sugar crashes. They may occur for various reasons.

Causes

There are two types of non-diabetic hypoglycemia: reactive hypoglycemia and fasting hypoglycemia. Reactive hypoglycemia, also called postprandial hypoglycemia, happens after a meal, typically a few hours later.

Possible causes of reactive hypoglycemia include:

Prediabetes or high risk for diabetes

Rare enzyme deficiencies that make it hard for your body to break down food

Dumping syndrome, which causes the body to release excess insulin after eating a carbohydrate-filled meal

On the other hand, fasting hypoglycemia can be caused by:

Certain medications, such as salicylates (including aspirin), sulfa drugs (an antibiotic), pentamidine (to treat a serious kind of pneumonia), and quinine (to treat malaria)

Alcohol, especially with binge drinking

Serious illnesses, such as those affecting the liver, heart, or kidneys

Low levels of certain hormones, such as cortisol, growth hormone, glucagon, or epinephrine

Tumors, such as a tumor in the pancreas, which produces insulin

Treatment

For people without diabetes, treatment depends on the cause of the hypoglycemia. For example, if you have a tumor that is causing your hypoglycemia, you may need surgery.

If a medicine is the cause, switching to a different medication can help. To treat your symptoms immediately, eat or drink 15 grams of carbohydrates.

A reactive hypoglycemia episode may be a sign the person has or may develop diabetes. You should discuss it with your healthcare provider to determine your next steps.

How to Stop Prediabetes From Turning Into Diabetes

Prevention

By making small tweaks to your diet, you can help avoid hypoglycemia. These changes include eating a balanced diet, eating less sugar and carbs, and eating more protein and fiber.

Another prevention tip is carrying a snack with you that can be used to raise your blood sugar. These snacks can include a handful of nuts, a hardboiled egg, or air-popped popcorn.

Tips for Keeping Blood Sugar Steady

The best way to address your personal concerns and needs is to discuss your diet, medication, and lifestyle with your healthcare team. They can diagnose any underlying conditions, adjust or change your medications, and advise you on the best ways to prevent hypoglycemia.

Tips that apply across the board to keep blood sugar stable include:

Eating a balanced dietKeeping track of foods and symptomsStaying activeReducing stressAddressing underlying conditionsTesting blood sugar consistentlyTalking about concerns with the healthcare teamKeeping hydratedPlanning mealsGetting adequate sleep

People with diabetes may face more challenges when managing blood sugar levels, but it is possible to stay healthy.

Summary

People with diabetes and those without can both experience sugar crashes, but for different reasons. Monitoring your blood sugar is your best bet at preventing a sugar crash if you have been diagnosed with diabetes. If you don’t have diabetes, talk to your healthcare provider to find out what may be causing your sugar crash and what changes you need to make.

A Word From Verywell

Some people may not experience symptoms when they have low blood sugar, which can put them at higher risk of more dangerous reactions like passing out, seizures, or coma. It's especially important for these people to continuously check their blood sugars to make sure it does not fall below 70 mg/dL and so they can treat it quickly if it does.

JAMIE JOHNSON, RDN, MEDICAL EXPERT BOARD

3 Sources

Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.

American Diabetes Association. Hypoglycemia (low blood sugar).

Östenson CG, Geelhoed-Duijvestijn P, Lahtela J, Weitgasser R, Markert Jensen M, Pedersen-Bjergaard U. Self-reported non-severe hypoglycaemic events in Europe. Diabet Med. 2014;31(1):92-101. doi:10.1111/dme.12261

Hormone Health Network. Non-diabetic hypoglycemia.

By Kimberly Charleson

Kimberly is a health and wellness content writer crafting well-researched content that answers your health questions.

See Our Editorial Process

Meet Our Medical Expert Board

Share Feedback

Was this page helpful?

Thanks for your feedback!

What is your feedback?

Other

Helpful

Report an Error

Submit

Related Articles

Reactive Hypoglycemia Overview

Hypoglycemic Episode: Learn What to Do if It Happens to You

Can Low Blood Sugar Cause Nausea?

Why It's Important to Monitor Glucose Levels

Does Sugar Consumption Cause Headaches?

The Link Between Blood Sugar and Anxiety

What Are Glucose Tabs?

Dangerous Blood Sugar Levels in Diabetes

What Is Hypoglycemia?

How to Lower Fasting Blood Sugar Naturally

Medications for Type 2 Diabetes

What Is a Sensor-Augmented Insulin Pump (SAP)?

Hyperinsulinema (High Insulin Levels)

How to Time Meals While Intermittent Fasting for Diabetes

Blood Sugar Level Chart: Readings in Older Adults

Can I Drink Alcohol If I Have Type 2 Diabetes?

Daily Health Tips to Your Inbox

Email Address

Sign Up

You're in!

Thank you, {{form.email}}, for signing up.

There was an error. Please try again.

Health A-Z

Prevention & Treatment

Health Care

News

Meet Our Medical Expert Board

About Us

Editorial Process

Diversity Pledge

Privacy Policy

In the News

Advertise

Terms of Service

Careers

Contact

Follow Us

Verywell Health's content is for informational and educational purposes only. Our website is not intended to be a substitute for professional medical advice, diagnosis, or treatment.

Ⓒ 2024 Dotdash Media, Inc. — All rights reserved

Verywell Health is part of the Dotdash Meredith publishing family.

Please review our updated Terms of Service.

Reactive hypoglycemia - Wikipedia

Reactive hypoglycemia - Wikipedia

Jump to content

Main menu

Main menu

move to sidebar

hide

Navigation

Main pageContentsCurrent eventsRandom articleAbout WikipediaContact usDonate

Contribute

HelpLearn to editCommunity portalRecent changesUpload file

Search

Search

Create account

Log in

Personal tools

Create account Log in

Pages for logged out editors learn more

ContributionsTalk

Contents

move to sidebar

hide

(Top)

1Signs and symptoms

2Causes

3Treatment

4Postprandial syndrome

5See also

6References

7Further reading

8External links

Toggle the table of contents

Reactive hypoglycemia

11 languages

العربيةCatalàDeutsch한국어Bahasa Indonesiaעברית日本語PolskiPortuguêsSuomiTürkçe

Edit links

ArticleTalk

English

ReadEditView history

Tools

Tools

move to sidebar

hide

Actions

ReadEditView history

General

What links hereRelated changesUpload fileSpecial pagesPermanent linkPage informationCite this pageGet shortened URLDownload QR codeWikidata item

Print/export

Download as PDFPrintable version

From Wikipedia, the free encyclopedia

Medical condition

"Sugar crash" redirects here. For the song, see SugarCrash!

Medical conditionReactive hypoglycemiaOther namesPostprandial hypoglycemia, sugar crashA typical recommendation: Half the plate is filled with high-fiber vegetables, and the rest is divided between tuna fish and a single serving of ramen noodles.SymptomsClumsiness, difficulty talking, confusion, loss of consciousness, and other symptoms related to hypoglycemiaUsual onsetWithin 4 hours of a high carbohydrate mealCausesGastric bypass surgery, over-secretion of insulinDiagnostic methodWhipple criteria, blood glucose test during spontaneous occurrence of symptoms, HbA1c blood test, 6-hour glucose tolerance testDifferential diagnosisAlimentary hypoglycemia, factitious hypoglycemia, insulin autoimmune hypoglycemia, noninsulinoma pancreatogenous hypoglycemia syndrome, insulinoma, hereditary fructose intolerancePreventionLow-carbohydrate diet, frequent small meals

Reactive hypoglycemia, postprandial hypoglycemia, or sugar crash is a term describing recurrent episodes of symptomatic hypoglycemia occurring within four hours[1] after a high carbohydrate meal in people with and without diabetes.[2] The term is not necessarily a diagnosis since it requires an evaluation to determine the cause of the hypoglycemia.[3]

The condition is related to homeostatic systems used by the body to control the blood sugar level. It is described as a sense of tiredness, lethargy, irritation, or hangover, although the effects can be lessened if a lot of physical activity is undertaken in the first few hours after food consumption.

The alleged mechanism for the feeling of a crash is correlated with an abnormally rapid rise in blood glucose after eating. This normally leads to insulin secretion (known as an insulin spike), which in turn initiates rapid glucose uptake by tissues, either storing it as glycogen or fat, or using it for energy production. The consequent fall in blood glucose is indicated as the reason for the "sugar crash".[4] Another cause might be hysteresis effect of insulin action, i.e., the effect of insulin is still prominent even if both plasma glucose and insulin levels were already low, causing a plasma glucose level eventually much lower than the baseline level.[5]

Sugar crashes are not to be confused with the after-effects of consuming large amounts of protein, which produces fatigue akin to a sugar crash, but are instead the result of the body prioritising the digestion of ingested food.[6]

The prevalence of this condition is difficult to ascertain because a number of stricter or looser definitions have been used. It is recommended that the term reactive hypoglycemia be reserved for the pattern of postprandial hypoglycemia which meets the Whipple criteria (symptoms correspond to measurably low glucose and are relieved by raising the glucose), and that the term idiopathic postprandial syndrome be used for similar patterns of symptoms where abnormally low glucose levels at the time of symptoms cannot be documented.

To assist in diagnosis, a doctor may order an HbA1c test, which measures the blood sugar average over the two or three months before the test. The more specific 6-hour glucose tolerance test can be used to chart changes in the patient's blood sugar levels before ingestion of a special glucose drink and at regular intervals during the six hours following to see if an unusual rise or drop in blood glucose levels occurs.

According to the U.S. National Institutes of Health (NIH), a blood glucose level below 70 mg/dL (3.9 mmol/L) at the time of symptoms followed by relief after eating confirms a diagnosis for reactive hypoglycemia.[1]

Signs and symptoms[edit]

Symptoms vary according to individuals' hydration level and sensitivity to the rate and/or magnitude of decline of their blood glucose concentration.[citation needed]

A crash is usually felt within four hours of heavy carbohydrate consumption. Along with the symptoms of hypoglycemia, symptoms of reactive hypoglycemia include:[7][8][9]

double vision or blurry vision

unclear thinking

brain fog

insomnia

heart palpitation or fibrillation

fatigue

dizziness

light-headedness

sweating

headaches

depression

nervousness

muscle twitches

irritability

tremors

flushing

craving sweets

increased appetite

rhinitis

nausea, vomiting

panic attack

numbness/coldness in the extremities

confusion

irrationality

hot flashes

bad temper

paleness

anxiety

trouble talking

cold hands

disorientation

the need to sleep or 'crash'

The majority of these symptoms, often correlated with feelings of hunger, mimic the effect of inadequate sugar intake as the biology of a crash is similar in itself to the body's response to low blood sugar levels following periods of glucose deficiency.[10]

Causes[edit]

The NIH states: "The causes of most cases of reactive hypoglycemia are still open to debate. Some researchers suggest that certain people may be more sensitive to the body’s normal release of the hormone epinephrine, which causes many of the symptoms of hypoglycemia. Others believe deficiencies in glucagon secretion might lead to reactive hypoglycemia.[1]

Several other hormones are responsible for modulating the body's response to insulin, including cortisol, growth hormone and sex hormones. Untreated or under-treated hormonal disorders such as adrenal insufficiency (see also Addison's disease[11]) or growth hormone deficiency[12] can therefore sometimes cause insulin hypersensitivity, and reactive hypoglycemia.

Stomach bypass surgery or hereditary fructose intolerance are believed to be causes, albeit uncommon, of reactive hypoglycemia. Myo-inositol or 1D-chiro-inositol withdrawal can cause temporary reactive hypoglycemia.[citation needed]

There are several kinds of reactive hypoglycemia:[13]

Alimentary hypoglycemia (consequence of dumping syndrome; it occurs in about 15% of people who have had stomach surgery)

Hormonal hypoglycemia (e.g., hypothyroidism)

Helicobacter pylori-induced gastritis (some reports suggest this bacteria may contribute to the occurrence of reactive hypoglycemia)[14]

Congenital enzyme deficiencies (hereditary fructose intolerance, galactosemia, and leucine sensitivity of childhood)[15]

Late hypoglycemia (occult diabetes; characterized by a delay in early insulin release from pancreatic beta-cells, resulting in initial exaggeration of hyperglycemia during a glucose tolerance test)[16]

"Idiopathic reactive hypoglycemia" is a term no longer used because researchers now know the underlying causes of reactive hypoglycemia and have the tools to perform the diagnosis and the pathophysiological data explaining the mechanisms.[13]

To check if there is real hypoglycemia when symptoms occur, neither an oral glucose tolerance test nor a breakfast test is effective; instead, a hyperglucidic breakfast test or ambulatory glucose testing is the current standard.[13][17]

The body requires a relatively constant input of glucose, a sugar produced upon digestion of carbohydrates, for normal functioning. Glucagon and insulin are among the hormones that ensure a normal range of glucose in the human body.[18] Upon consumption of a meal, blood sugar normally rises, which triggers pancreatic cells to produce insulin. This hormone initiates the absorption of the just-digested blood glucose as glycogen into the liver for metabolism or storage, thereby lowering glucose levels in the blood. In contrast, the hormone glucagon is released by the pancreas as a response to lower than normal blood sugar levels. Glucagon initiates uptake of the stored glycogen in the liver into the bloodstream so as to increase glucose levels in the blood.[19]

Sporadic, high-carbohydrate snacks and meals are deemed the specific causes of sugar crashes. The “crash” one feels is due to the rapid increase and subsequent decline of blood sugar in the body system as one begins and ceases consumption of high-sugar foods. More insulin than is actually needed is produced in response to the large, rapid ingestion of sugary foods.[citation needed]

Treatment[edit]

Reactive hypoglycemia can usually be relieved by dietary changes:[20]

Avoiding or limiting sugar intake, including candy, sweet desserts, fruit juice, and drinks with added sugar.[20][21]

Eating only small amounts of starchy foods, including potatoes, pasta, breakfast cereals, and rice.[20]

Eating a variety of foods, including:

eggs, nuts, dairy products, tofu, beans, lentils, meat, poultry, fish, or other sources of protein with every meal or snack,[20]

whole-grain carbohydrates, such as eating whole wheat bread instead of white bread,[20] and

more fruits and vegetables (but not fruit juice), with 5 A Day being a recommended goal for most people.[20]

Eating more high-fiber foods, such as lentils, beans, pulses (legumes), leafy greens, and most fruits and vegetables.[20]

Other tips to prevent sugar crashes include:

Exercising regularly, as exercise increases cellular sugar uptake, which decreases excessive insulin release.[22][23]

Avoiding eating meals or snacks composed entirely of carbohydrates;[20] simultaneously ingest fats[dubious – discuss] and proteins, which have slower rates of absorption;[citation needed]

Consistently choosing longer lasting, complex carbohydrates to prevent rapid blood-sugar dips in the event that one does consume a disproportionately large amount of carbohydrates with a meal;

Monitoring any effects medication may have on symptoms.[4]

Low-carbohydrate diet and/or frequent small meals is the first treatment of this condition. The first important point is to add small meals at the middle of the morning and of the afternoon, when glycemia would start to decrease. If adequate composition of the meal is found, the fall in blood glucose is thus prevented. Patients should avoid rapidly absorbed sugars and thus avoid popular soft drinks rich in glucose or sucrose. They should also be cautious with drinks associating sugar and alcohol, mainly in the fasting state.[13]

As it is a short-term ailment, a sugar crash that was not caused by injecting too much insulin does not usually require medical intervention in most people. The most important factors to consider when addressing this issue are the composition and timing of foods.[24]

Acute (short-term) low blood sugar symptoms are best treated by consuming small amounts of sweet foods, so as to regain balance in the body's carbohydrate metabolism. Suggestions include sugary foods that are quickly digested, such as:

Dried fruit

Soft drinks

Juice

Sugar as sweets, tablets or cubes.[25]

The anti-hypertensive class of medication known as calcium channel blockers could be useful for reactive hypoglycemia as inhibition of the calcium channels on beta islet cells can help prevent an overproduction of insulin after a meal is eaten.[26][27]

Postprandial syndrome[edit]

Main article: Idiopathic postprandial syndrome

If there is no hypoglycemia at the time of the symptoms, this condition is called idiopathic postprandial syndrome. It might be an "adrenergic postprandial syndrome" — blood glucose levels are normal, but the symptoms are caused through autonomic adrenergic counterregulation.[28] Often, this syndrome is associated with emotional distress and anxious behaviour of the patient.[13] This is often seen in dysautonomic disorders as well. Dietary recommendations for reactive hypoglycemia can help to relieve symptoms of postprandial syndrome.[citation needed]

See also[edit]

Spontaneous hypoglycemia

Refeeding syndrome

References[edit]

^ a b c "Hypoglycemia." It can also be referred to as "sugar crash" or "glucose crash." National Diabetes Information Clearinghouse, October 2008. http://diabetes.niddk.nih.gov/dm/pubs/hypoglycemia/ Archived February 8, 2015, at the Wayback Machine Archived version at https://web.archive.org/web/20180415102429/https://www.niddk.nih.gov/health-information/diabetes/overview/preventing-problems/low-blood-glucose-hypoglycemia

^ "Hypos After Eating - Reactive Hypoglycemia". Retrieved September 8, 2018.

^ Service, FJ; Vella, A (June 11, 2018). "Postprandial (reactive) hypoglycemia". UpToDate. Retrieved September 8, 2018.

^ a b Hendrickson, Kirstin. "Side Effects of a Sugar Overdose". Demand Media, Inc. Retrieved November 8, 2011.

^ Wang, Guanyu (October 15, 2014). "Raison d'être of insulin resistance: the adjustable threshold hypothesis". J R Soc Interface. 11 (101): 20140892. doi:10.1098/rsif.2014.0892. PMC 4223910. PMID 25320065.

^ "The Truth about Tryptophan". WebMD.

^ "Hypoglycemia". National Diabetes Information Clearinghouse. U.S. Department of Health and Human Services. Archived from the original on February 8, 2015. Retrieved November 8, 2011.

^ "Hypoglycemia". Mayo Foundation for Medical Education and Research. Mayo Clinic. Retrieved November 8, 2011.

^ Simpson, Jamie. "Causes of Low Blood Sugar". Demand Media. Retrieved November 8, 2011.

^ "Diabetes". American Dietetic Association. Retrieved November 11, 2011.

^ Turner, Edward L. (November 1, 1933). "Inverted sugar tolerance curves in a case of Addison's Disease". Endocrinology. 17 (6): 699–702. doi:10.1210/endo-17-6-699.

^ Pia A, Piovesan A, Tassone F, Razzore P, Visconti G, Magro G, Cesario F, Terzolo M, Borretta G (December 2004). "A rare case of adulthood-onset growth hormone deficiency presenting as sporadic, symptomatic hypoglycemia". J. Endocrinol. Invest. 27 (11): 1060–4. doi:10.1007/BF03345310. PMID 15754739. S2CID 1411317.

^ a b c d e Brun JF, Fedou C, Mercier J (November 2000). "Postprandial reactive hypoglycemia". Diabetes Metab. 26 (5): 337–51. PMID 11119013.

^ Açbay O, Celik AF, Kadioğlu P, Göksel S, Gündoğdu S (1999). "Helicobacter pylori-induced gastritis may contribute to occurrence of postprandial symptomatic hypoglycemia". Dig. Dis. Sci. 44 (9): 1837–42. doi:10.1023/A:1018842606388. PMID 10505722. S2CID 22096584.

^ Hamdy O, Srinivasan V, Snow KJ. "Hypoglycemia". Medscape. WebMD LLC. Retrieved July 6, 2007.-Updated March 2018

^ Umesh Masharani (2007). "Postprandial Hypoglycemia (Reactive Hypoglycemia)". The Hypoglycemic states - Hypoglycemia. Armenian Medical Network.

^ Berlin I, Grimaldi A, Landault C, Cesselin F, Puech AJ (November 1994). "Suspected postprandial hypoglycemia is associated with beta-adrenergic hypersensitivity and emotional distress". J. Clin. Endocrinol. Metab. 79 (5): 1428–33. doi:10.1210/jcem.79.5.7962339. PMID 7962339.

^ "How the Body Controls Blood Sugar". Web MD Diabetes. Healthwise Incorporated. Retrieved November 8, 2011.

^ "Hypoglycemia". Hormonal and Metabolic Disorders. Merck Sharp & Dohme Corp. Retrieved November 8, 2011.

^ a b c d e f g h "Healthy Eating for Reactive Hypoglycemia". National Health Service (3rd ed.). UK. 2017. NHS Trust Docs ID: 10513 (Review date: 2020-06-11).

^ Kenrose, S. The Reactive Hypoglycemia Sourcebook, 2009. ISBN 978-0-557-07407-5"

^ Gregory, Justin M.; Muldowney, James A.; Engelhardt, Brian G.; Tyree, Regina; Marks-Shulman, Pam; Silver, Heidi J.; Donahue, E. Patrick; Edgerton, Dale S.; Winnick, Jason J. (September 2, 2019). "Aerobic exercise training improves hepatic and muscle insulin sensitivity, but reduces splanchnic glucose uptake in obese humans with type 2 diabetes". Nutrition & Diabetes. 9 (1): 25. doi:10.1038/s41387-019-0090-0. ISSN 2044-4052. PMC 6717736. PMID 31474750.

^ Gibala, Martin J; Little, Jonathan P (September 15, 2010). "Just HIT it! A time-efficient exercise strategy to improve muscle insulin sensitivity". The Journal of Physiology. 588 (Pt 18): 3341–3342. doi:10.1113/jphysiol.2010.196303. ISSN 0022-3751. PMC 2988497. PMID 20843832.

^ Collazo-Clavell, Maria. "Reactive Hypoglycemia". Mayo Foundation for Medical Education and Research. Retrieved November 11, 2011.

^ "Hypoglycemia (Low Blood Sugar) in People Without Diabetes". Diabetes Health Center. WebMD, LLC. Retrieved November 8, 2011.

^ Sanke, T; Nanjo, K; Kondo, M; Nishi, M; Moriyama, Y; Miyamura, K (October 1986). "Effect of calcium antagonists on reactive hypoglycemia associated with hyperinsulinemia". Metabolism: Clinical and Experimental. 35 (10): 924–7. doi:10.1016/0026-0495(86)90055-7. PMID 3762399.

^ Guseva, Nina; Phillips, David; Mordes, John (January 2010). "Successful Treatment of Persistent Hyperinsulinemic Hypoglycemia with Nifedipine in an Adult Patient". Endocrine Practice. 16 (1): 107–111. doi:10.4158/EP09110.CRR. PMC 3979460. PMID 19625246.

^ "Postprandial Hypoglycemia". Retrieved November 29, 2011.

Further reading[edit]

Açbay O, Celik AF, Kadioğlu P, Göksel S, Gündoğdu S (1999). "Helicobacter pylori-induced gastritis may contribute to occurrence of postprandial symptomatic hypoglycemia". Dig. Dis. Sci. 44 (9): 1837–42. doi:10.1023/A:1018842606388. PMID 10505722. S2CID 22096584.

External links[edit]

ClassificationDICD-10: E16.1ICD-9-CM: 251.2MeSH: D007003

Article about hypoglycemia at eMedicine

vteMedicineSpecialtiesandsubspecialtiesSurgery

Cardiac surgery

Cardiothoracic surgery

Endocrine surgery

Eye surgery

General surgery

Colorectal surgery

Digestive system surgery

Neurosurgery

Oral and maxillofacial surgery

Orthopedic surgery

Hand surgery

Otolaryngology

ENT

Pediatric surgery

Plastic surgery

Reproductive surgery

Surgical oncology

Transplant surgery

Trauma surgery

Urology

Andrology

Vascular surgery

Internalmedicine

Allergy / Immunology

Angiology

Cardiology

Endocrinology

Gastroenterology

Hepatology

Geriatrics

Hematology

Hospital medicine

Infectious diseases

Nephrology

Oncology

Pulmonology

Rheumatology

Obstetrics andgynaecology

Gynaecology

Gynecologic oncology

Maternal–fetal medicine

Obstetrics

Reproductive endocrinology and infertility

Urogynecology

Diagnostic

Radiology

Interventional radiology

Neuroradiology

Nuclear medicine

Pathology

Anatomical

Clinical pathology

Clinical chemistry

Cytopathology

Medical microbiology

Transfusion medicine

Other

Addiction medicine

Adolescent medicine

Anesthesiology

Obstetric anesthesiology

Neurosurgical anesthesiology

Aviation medicine

Dermatology

Disaster medicine

Diving medicine

Emergency medicine

Mass gathering medicine

Evolutionary medicine

Family medicine / General practice

Hospital medicine

Intensive care medicine

Medical genetics

Narcology

Neurology

Clinical neurophysiology

Occupational medicine

Ophthalmology

Oral medicine

Pain management

Palliative care

Pediatrics

Neonatology

Phlebology

Physical medicine and rehabilitation (PM&R)

Preventive medicine

Prison healthcare

Psychiatry

Addiction psychiatry

Radiation oncology

Reproductive medicine

Sexual medicine

Venereology

Sleep medicine

Sports medicine

Transplantation medicine

Tropical medicine

Travel medicine

Medicaleducation

Medical school

Bachelor of Medicine, Bachelor of Surgery

Bachelor of Medical Sciences

Master of Medicine

Master of Surgery

Doctor of Medicine

Doctor of Osteopathic Medicine

MD–PhD

Medical Scientist Training Program

Related topics

Alternative medicine

Allied health

Molecular oncology

Nanomedicine

Personalized medicine

Public health

Rural health

Therapy

Traditional medicine

Veterinary medicine

Physician

Chief physician

History of medicine

Category

Commons

Wikiproject

Portal

Outline

Retrieved from "https://en.wikipedia.org/w/index.php?title=Reactive_hypoglycemia&oldid=1170086216"

Category: Disorders of endocrine pancreasHidden categories: Webarchive template wayback linksArticles with short descriptionShort description matches WikidataUse mdy dates from July 2011All articles with unsourced statementsArticles with unsourced statements from October 2021Articles with unsourced statements from May 2022All accuracy disputesArticles with disputed statements from September 2019Articles with unsourced statements from September 2019

This page was last edited on 13 August 2023, at 03:18 (UTC).

Text is available under the Creative Commons Attribution-ShareAlike License 4.0;

additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization.

Privacy policy

About Wikipedia

Disclaimers

Contact Wikipedia

Code of Conduct

Developers

Statistics

Cookie statement

Mobile view

Toggle limited content width

Sugar crash effects and how to fix them - Sanford Health News

Sugar crash effects and how to fix them - Sanford Health News

Skip to main content

Menu

Search

News

Doctors

Locations

Medical Services

Patients & Visitors

About

My Sanford Chart

Find Care

My Sanford Chart

Search for

Sanford Health NewsSanford Health NewsSHN HomeMedia Resources

Contact Media RelationsNews ReleasesMedia KitsSanford in the NewsAbout Sanford Health News

PodcastsHealth Topics

Behavioral HealthCancerChildren'sCOVID-19HeartOrthopedicsPregnancy & ChildbirthPreventive CareSenior ServicesWomen'sAll Stories

Working at Sanford

Community InvolvementPeople & CultureSanford StoriesAwards & RecognitionVeteransInclusion at SanfordCompany NewsLeadership in Health CareHere for all. Here for good.

HOME

   /  

Healthy Living

Sugar crash effects and how to fix them

It’s all about balance, moderation and consistency

Written by

SHN Staff

December 19, 2022

7 min read

HOME

   /  

Healthy Living

A sugar crash is the sudden drop in energy levels after consuming a large amount of carbohydrates, such as pasta, pizza and desserts. (Photo by Getty Images)

The sugar high is all fun and games until the resulting sugar crash affects the quality of your day.

The term refers to the sudden drop in energy levels after consuming a large amount of carbohydrates. This can include pastas and pizza but is usually more common after eating simple carbohydrates, also known as simple sugars, such as desserts.

A sugar crash often causes undesired symptoms that can disrupt productivity and energy levels throughout the day.

Find a nutrition specialist: Nutrition services at Sanford Health

Dietitians at Sanford Health suggest balance, moderation and consistency are the most effective ways to avoid these crashes. They share their knowledge on sugar crashes, how to avoid them and what to do if you get one.

What does a sugar crash feel like?

You may experience a crash after indulging in high amounts of carbohydrates, especially simple sugars such as cake and ice cream. Although the human body needs sugar, it also needs the amount of sugar to remain at a consistent level.

When the body has more sugar than it’s used to, it rapidly produces insulin in an attempt to keep the levels consistent. This causes blood glucose to decrease, which results in a sudden drop in energy levels, also known as hypoglycemia, or a sugar crash.

With this drastic drop in energy, the body can experience undesired symptoms such as:

Hunger

Irritability

Fatigue

Discomfort

Anxiety

Headaches

Difficulty concentrating

Excess sweat

Jitters

Shakiness

Dizziness

Sugar crashes generally cause us to be incredibly distracted throughout the day, which leads to a lack of productivity and concentration. Confusion, abnormal behavior, the inability to complete routine tasks and blurred vision are also common symptoms, especially for those who have diabetes. People with diabetes may experience more severe symptoms such as loss of consciousness, seizures or coma, if the crash is harsh enough, because of their increased sensitivity to inconsistent sugar levels.

How to avoid crashing

Sanford dietitians stress that the most effective way to avoid sugar crashes is to incorporate balance. The key is keeping blood glucose levels consistent, which can be done by balancing meals with the appropriate amounts of protein sources, fiber and fats:

Eat a variety of foods. To keep blood glucose levels consistent, keep a balance of all major food groups and nutrients. All meals and snacks eaten throughout the day should include a mix of protein, fiber, carbohydrates and fat. If a high-carb meal or snack is consumed without any sources of protein, fiber or fat, blood glucose levels drop. This drop causes a sugar crash.

If you’re going to eat simple sugars, eat them with or after other meals. Simple sugars are foods that contain refined sugars and very few essential vitamins and minerals. Examples of foods that contain simple sugars include fruit juice, milk, desserts and candy. Avoid a sugar crash by making sure to eat them with foods containing fat, fiber and protein.

Eat less but more often. Eat smaller portions every two to three hours throughout the day. Continue to eat breakfast, lunch and dinner, but eat smaller portions at those meals and incorporate two to three snacks a day in between those staple meals.

Don’t restrict any foods. Avoid overindulging but enjoy it all. Consume all foods, drinks and desserts in moderation, especially simple carbohydrates/sugars. Just be sure to eat your simple sugars with other nutrient-dense meals to avoid a sugar crash.

Plan your meals. To ensure each meal or snack includes an appropriate balance of carbohydrates, protein and fat, plan meals ahead of time. It typically works best to plan each meal at least one day prior to consumption. By sitting down and planning meals, you can make sure you have a proper balance for the next day. Your doctor can refer a registered dietitian to help with personalized meal planning advice if needed.

Fixing a crash

Overall, it’s important to have a variety of foods throughout the day to avoid a sugar crash, but it’s also important to know which foods “fix” a sugar crash.

While it’s common for people to think they can beat a sugar crash by eating more carbohydrates for energy, it will only temporarily boost energy. The underlying problem is protein malnutrition, which won’t be resolved by eating a candy bar. During a sugar crash, the body is looking for protein sources to balance out blood glucose levels.

So make sure to eat some protein. Otherwise the sugar crashes will continue.

Learn more

What’s the scoop on sugar? Take our quiz

Mindful eating benefits the whole family

How your grandmother’s diet could affect you

Posted In

Endocrinology, Health Information, Healthy Living, Nutrition, Weight Loss

SHN Staff

Sanford Health News is your site for health news from the experts at Sanford Health. SHN staff is a team of Midwest-Emmy-winning journalists bringing you trustworthy information on healthy living, health care, scientific research, health conditions and medical innovation.

Related Articles

Daylight saving time tips to ease health effects

"Spring forward" or "fall back," the effect is like a mild case of jet lag

Michelle Olofson

⋅ 5 min read

Home safety tips help you age in place

Aubrey Gilbert

⋅ 6 min read

What are the advantages of Medicare Advantage plans?

Mick Garry

⋅ 8 min read

3D mammograms now available in more rural clinics

Mick Garry

⋅ 6 min read

Understanding cervical cancer: signs, causes & risk factors

Katie Wright

⋅ 8 min read

More in Healthy Living

Stay up to date with news from Sanford Health

Sign Up

Stay Connected

About

Sanford

Medical

Professionals

Mobile Apps

Video

Library

Sanford Health News

Classes and Events

Careers

Contact

Media Relations

Donate

Volunteer

Resources

Patient

Education

Sanford Health Plan

Sanford Health Foundation

Sanford Imagenetics

Sanford Research

Sanford Innovations

Edith Sanford Breast Center

Sanford World Clinic

Sanford Wellness Centers

Lorraine Cross Award

Contact Us

Copyright © 2024 Sanford Health. All rights reserved.

Sitemap

Privacy of Health Information

Privacy Statement

Terms and Conditions

sanfordhealth.org

Employee Resources

Success Center

Access to this page has been denied.

Access to this page has been denied. Please verify you are a human Access to this page has been denied because we believe you are using automation tools to browse the website. This may happen as a result of the following: Javascript is disabled or blocked by an extension (ad blockers for example) Your browser does not support cookies Please make sure that Javascript and cookies are enabled on your browser and that you are not blocking them from loading. Questions: security@goodrx.com Reference ID: #9398dda7-e0ab-11ee-8a87-c1f3996930b2 Powered by PerimeterX , Inc.

Sugar Crash: the Effects and How to Avoid It

Sugar Crash: the Effects and How to Avoid It

Business Insider logo

Reviews

Business Insider logo

Account icon

An icon in the shape of a person's head and shoulders. It often indicates a user profile.

Account icon

An icon in the shape of a person's head and shoulders. It often indicates a user profile.

Tech

All Tech

Audio

Accessories

Batteries & Charging

Cameras

Computers

Gaming

Headphones

Home Theater

Laptops

Printers & Scanners

Smart Home

Smartphones

Storage

Tablets

TVs

Streaming

Home

All Home

Mattresses

Bedroom

Bathroom

Cleaning

Closet & Laundry

Garage

Entertaining

Furniture

Home Decor

Holiday Decor

Gardening

Office

Safety

Smart Home Devices

Storage

Tools

Kitchen

All Kitchen

Appliances

Baking

Coffee & Tea

Cookware

Dining & Entertaining

Food & Beverages

Storage

Tools

Wine & Bar

Health

All Health

Fitness

Diet & Nutrition

Dental

Mental Health

Conditions & Symptoms

Treatments

Reproductive Health

Sex & Relationships

Style

All Style

Women’s clothing

Women’s shoes

Women’s handbags & accessories

Men’s clothing

Men’s shoes

Men’s accessories

Beauty

All Beauty

Skincare

Haircare

Makeup

Bath & Body

Shaving & Grooming

Fragrance

Gifts

All Gifts

Gifts for Men

Gifts for Women

Gifts for Baby

Gifts for Kids

Gifts for Teens

Gifts for Everyone

Christmas

Valentine’s Day

Mother’s Day

Father’s Day

Deals

Pets

Parenting

Coupons

All Coupons

DoorDash

Walmart

Dell

Staples

Under Armour

Learning

Hobbies & Crafts

Travel

All Travel

Hotels

Flights

Experiences

Destinations

Luggage & Travel Gear

Travel Rewards

Transportation

More

Tech

Streaming

Home

Kitchen

Health

Style

Beauty

Gifts

Deals

Pets

Parenting

Coupons

Learning

Hobbies & Crafts

Travel

Back to Top

A white circle with a black border surrounding a chevron pointing up. It

indicates 'click here to go back to the top of the page.'

Close icon

Two crossed lines that form an 'X'. It indicates a way to close an interaction, or dismiss a notification.

Reviews

Tech

Angle down icon

An icon in the shape of an angle pointing down.

All Tech

Audio

Accessories

Batteries & Charging

Cameras

Computers

Gaming

Headphones

Home Theater

Laptops

Printers & Scanners

Smart Home

Smartphones

Storage

Tablets

TVs

Streaming

All Streaming

Home

Angle down icon

An icon in the shape of an angle pointing down.

All Home

Mattresses

Bedroom

Bathroom

Cleaning

Closet & Laundry

Garage

Entertaining

Furniture

Home Decor

Holiday Decor

Gardening

Office

Safety

Smart Home Devices

Storage

Tools

Kitchen

Angle down icon

An icon in the shape of an angle pointing down.

All Kitchen

Appliances

Baking

Coffee & Tea

Cookware

Dining & Entertaining

Food & Beverages

Storage

Tools

Wine & Bar

Health

Angle down icon

An icon in the shape of an angle pointing down.

All Health

Fitness

Diet & Nutrition

Dental

Mental Health

Conditions & Symptoms

Treatments

Reproductive Health

Sex & Relationships

Style

Angle down icon

An icon in the shape of an angle pointing down.

All Style

Women’s clothing

Women’s shoes

Women’s handbags & accessories

Men’s clothing

Men’s shoes

Men’s accessories

Beauty

Angle down icon

An icon in the shape of an angle pointing down.

All Beauty

Skincare

Haircare

Makeup

Bath & Body

Shaving & Grooming

Fragrance

Gifts

Angle down icon

An icon in the shape of an angle pointing down.

All Gifts

Gifts for Men

Gifts for Women

Gifts for Baby

Gifts for Kids

Gifts for Teens

Gifts for Everyone

Christmas

Valentine’s Day

Mother’s Day

Father’s Day

Deals

All Deals

Pets

All Pets

Parenting

All Parenting

Coupons

Angle down icon

An icon in the shape of an angle pointing down.

All Coupons

DoorDash

Walmart

Dell

Staples

Under Armour

Learning

All Learning

Hobbies & Crafts

All Hobbies & Crafts

Travel

Angle down icon

An icon in the shape of an angle pointing down.

All Travel

Hotels

Flights

Experiences

Destinations

Luggage & Travel Gear

Travel Rewards

Transportation

Log out

Account icon

An icon in the shape of a person's head and shoulders. It often indicates a user profile.

Login

Reviews

Chevron icon

It indicates an expandable section or menu, or sometimes previous / next navigation options.

Health

6 ways to avoid a sugar crash after eating sweets or carbs

Written by

Ashley Laderer; edited by

Samantha Crozier

2021-12-14T19:53:34Z

Share icon

An curved arrow pointing right.

Share

Facebook Icon

The letter F.

Facebook

Email icon

An envelope. It indicates the ability to send an email.

Email

Twitter icon

A stylized bird with an open mouth, tweeting.

Twitter

LinkedIn icon

LinkedIn

Link icon

An image of a chain link. It symobilizes a website link url.

Copy Link

Save Article Icon

A bookmark

Save

Read in app

This article was medically reviewed by Jason R. McKnight, MD, MS, a family medicine physician and clinical assistant professor at Texas A&M College of Medicine. 

Medically Reviewed

Reviewed By Check Mark Icon

A check mark. It indicates that the relevant content has been reviewed and verified by an expert

Our stories are reviewed by medical professionals to ensure you get the most accurate and useful information about your health and wellness. For more information, visit our medical review board.

Angle down icon

An icon in the shape of an angle pointing down.

Sugar crashes can occur after consuming things like pastries, cookies, sodas, and juices.

Peter Dazeley/Getty Images

This story is available exclusively to Business Insider

subscribers.

Become an Insider

and start reading now.

Have an account? Log in.

Redeem now

A sugar crash happens when blood sugar levels dip below normal after you eat lots of carbs or sugar.

You can avoid it by breaking up your usual portions into smaller, more frequent meals. 

It also helps if you eat less sugar and eat more protein, healthy fats, and complex carbohydrates.

NEW LOOK

Sign up to get the inside scoop on today’s biggest stories in markets, tech, and business — delivered daily. Read preview

Thanks for signing up!

Access your favorite topics in a personalized feed while you're on the go.

download the app

Email address

Sign up

By clicking “Sign Up”, you accept our Terms of Service and Privacy Policy. You can opt-out at any time.

Advertisement

Ever felt shaky, weak, and nauseous after eating a lot of carbs or sugar? If yes, you've likely experienced what's called reactive hypoglycemia, or more commonly known as a sugar crash. Reactive hypoglycemia is when sugar levels in the blood, aka glucose levels, dip below normal two to four hours after eating.  Medical term: Glucose is a simple sugar that your body produces from breaking down carbohydrates for energy. It ends up in your blood as blood sugar. Consuming a lot of sugar or processed carbs in a short period of time will raise your blood sugar, and can later result in a sugar crash.People with diabetes are prone to these types of blood sugar crashes — especially if they're not getting the right medication dose. However, anyone can experience the uncomfortable side effects of reactive hypoglycemia. It's unclear what causes sugar crashes after a carb-heavy meal, but there are proven ways to help avoid it. Note: The majority of research on blood sugar maintenance involves people with diabetes. However, the basic premise of eating the right foods and portions applies to everyone who is trying to avoid a sugar crash.Overall, it's best to change your eating habits in order to promote slower digestion. When the stomach empties at a slower, steadier rate, your body converts the food into glucose more gradually, preventing a more dramatic blood sugar spike, says Samantha Cochrane, LD, registered dietitian nutritionist at The Ohio State University Wexner Medical Center.Here are six dietitian-approved ways to avoid a sugar crash.

Advertisement

1. Eat small, frequent meals To avoid blood sugar crashes, consider breaking up your typical large meals into smaller meals or snacks that you eat every few hours. Smaller meals deliver a smaller dose of carbs, which can help stabilize blood sugar and reduce the risk of sugar spikes and subsequent crashes, says Courtney Cary, MS, RD, senior registered dietitian in the Department of Medicine at Baylor College of Medicine. 

Advertisement

2. Increase your protein intakeEat protein with your meals since it helps slow digestion, which may prevent blood sugar spikes and subsequent crashes, says Cochrane.Quick tip: The daily recommended amount of protein per day is 0.8 grams per kilogram of body weight. A simple way to calculate this is by multiplying your weight in pounds by 0.36.The following are examples of healthy protein sources:Lean meatsFishEggsNutsBeansLegumes

Advertisement

3. Eat complex carbohydrates instead of simple carbohydratesIf your carb intake mainly consists of foods like white rice, white bread, and pasta, you're consuming carbs that don't have fiber or protein to assist with blood sugar control, says Cary. These are known as simple carbohydrates.Instead, opt for complex carbohydrates which are much better for stabilizing blood sugar since they contain protein and fiber that take longer to digest. They also typically have a low glycemic index, meaning they cause a more gradual rise and fall in blood sugar levels, Cary says.Cary says some examples of complex carbohydrate foods are:Brown riceQuinoaWhole grain breadWheat or bean-based pastasBeans

Advertisement

4. Incorporate healthy fats into your dietSimilar to protein, healthy monounsaturated and polyunsaturated fats are beneficial for blood sugar since they take longer to digest than simple carbs, Cochrane says. You can find these healthy fats in foods such as:AvocadosNutsOils like olive, canola, safflower, and sunflower

Advertisement

5. Decrease or eliminate high sugar foods and drinks High-sugar foods and drinks are typically made up of simple sugars that your body breaks down quickly causing a rapid increase and subsequent drop in blood sugar, says Cary.High-sugar foods and drinks to avoid include just about anything loaded with calories, carbs, and little else (like fiber and protein):CandySodaJuicePastriesCakesSweet cocktails and mocktails

Advertisement

6. Pay attention to "added sugar" on food labelsAdded sugar refers to sugars added to foods that are not naturally occurring, says Cary. "For example, lactose is the naturally-occurring sugar in dairy products. A serving of strawberry yogurt may have 15 grams of sugar [from lactose], but also contain 18 grams of added sugar for flavoring," says Cary.A 2017 study found that only 44% of American adults stick to the dietary guidelines of keeping their added sugar intake below 10% of their daily calories — so for a 2,000 calorie diet, that equates to no more than 20 grams of added sugar a day. 

Advertisement

Insider's takeawayBy following these tips, such as eating smaller, more frequent meals, opting for complex carbohydrates, and decreasing overall simple sugar intake, you can successfully avoid sugar crashes. If you follow these tips and still experience sugar crashes, consider getting checked out by your doctor to see if there may be any underlying cause such as pre-diabetes or a metabolic disorder. "Sometimes these crashes are predictive of future blood sugar problems, like diabetes. Many times, changes in how one eats and what is eaten can make a significant difference in preventing these blood sugar crashes," says Cochrane.

Ashley Laderer

Ashley Laderer is a freelance writer from New York who specializes in health and wellness. Follow her on Twitter @ashladerer

Read more

Read less

Advertisement

Advertisement

Recommended video

Advertisement

Follow us on:

*

Copyright © 2024

Insider Inc. All rights reserved.

Registration on or use of this site constitutes acceptance of our Terms of Service

and

Privacy Policy.

Contact Us

Masthead

Sitemap

Disclaimer

Accessibility

Commerce Policy

Advertising Policies

Coupons

Made in NYC

Jobs @ Business Insider

Stock quotes by

finanzen.net

Reprints & Permissions

International Editions:

United States

US

International

INTL

Deutschland & Österreich

AT

Deutschland

DE

España

ES

India

IN

Japan

JP

México

MX

Netherlands

NL

Polska

PL

Jump to

Main content

Search

Account

Reactive Hypoglycemia: Causes, How It Feels, Triggers

Reactive Hypoglycemia: Causes, How It Feels, Triggers

Menu

Health A-Z

COVID-19

Arthritis

Type 2 Diabetes

Heart Disease

Digestive Health

Multiple Sclerosis

View All

Prevention & Treatment

COVID-19 Vaccines

Vaccines

First Aid

Surgery

Occupational Therapy

Healthy Aging

View All

Health Care

Health Insurance

Public Health

Patient Rights

Disability

Caregivers & Loved Ones

End of Life Concerns

View All

News

COVID-19

Health News

Tools & Resources

Thyroid Test Analyzer

Doctor Discussion Guides

Hemoglobin A1c Test Analyzer

Lipid Test Analyzer

Complete Blood Count (CBC) Analyzer

What to Buy

About Us

Editorial Process

Meet Our Medical Expert Board

Search

Search

GO

Health A-Z

COVID-19

Arthritis

Type 2 Diabetes

Heart Disease

Digestive Health

Multiple Sclerosis

View All

Prevention & Treatment

COVID-19 Vaccines

Vaccines

First Aid

Surgery

Occupational Therapy

Healthy Aging

View All

Health Care

Health Insurance

Public Health

Patient Rights

Disability

Caregivers & Loved Ones

End of Life Concerns

View All

News

COVID-19

Health News

View All

More in Type 2 Diabetes

Hypoglycemia

Symptoms

Causes & Risk Factors

Diagnosis & Treatment

Living With

Nutrition & Weight Loss

A1C Test Analyzer

View More

Tools & Resources

Thyroid Test Analyzer

Doctor Discussion Guides

Hemoglobin A1c Test Analyzer

Lipid Test Analyzer

Complete Blood Count (CBC) Analyzer

What to Buy

About Us

Editorial Process

Privacy Policy

Contact Us

Verywell Health's content is for informational and educational purposes only. Our website is not intended to be a substitute for professional medical advice, diagnosis, or treatment.

Ⓒ 2024 Dotdash Media, Inc. — All rights reserved

Type 2 Diabetes

Hypoglycemia

Reactive Hypoglycemia Overview

Blood Sugar Drops After Eating

By

Debra Manzella, RN

Updated on October 24, 2023

Medically reviewed by

Danielle Weiss, MD

Print

Table of Contents

View All

Table of Contents

Definition

Signs and Symptoms

When to See a Healthcare Provider

Diagnosis

Conditions That Can Mimic Hypoglycemia

Causes

Treatment

Reactive hypoglycemia, also called postprandial hypoglycemia, is when your blood sugar (blood glucose) drops after eating. Sometimes referred to as a "sugar crash," reactive hypoglycemia usually occurs within four hours of eating.

Reactive hypoglycemia is one of two types of hypoglycemia unrelated to diabetes. The other is known as fasting hypoglycemia, which happens when you don't eat for a long time. Other medical conditions may also mimic hypoglycemia.

The cause of reactive hypoglycemia is often unknown, although there are a handful of medical conditions associated with it. The treatment is typically focused on normalizing blood glucose levels by consuming a small amount of sugary food or beverage.

Verywell / Alex Dos Diaz

This article explains what reactive hypoglycemia is and how it differs from hypoglycemia in people with diabetes. It also outlines the symptoms, causes, and methods of diagnosing and treating this uncommon form of hypoglycemia.

What Is Hypoglycemia?

Hypoglycemia is the medical term for low blood sugar, with the prefix hypo- meaning "low" and "glycemia" referring to the presence of glucose in the blood. Glucose is one of the main sources of energy for the body.

Hypoglycemia occurs when blood glucose levels drop below normal. Symptoms of hypoglycemia typically occur when glucose levels drop below 70 milligrams per deciliter of blood (mg/dL).

Hypoglycemia is common in people with diabetes, who may experience a drop in blood sugar due to high insulin doses, among other things. But, hypoglycemia can also affect people who don't have diabetes for entirely different reasons.

Reactive Hypoglycemia

Usually happens after eating high-carbohydrate meals

Could indicate pre-diabetes or being at risk for diabetes

May be caused by a history of stomach surgery

Fasting Hypoglycemia

Occurs after a long period of time without eating

Could be caused by certain medications, alcohol, or illnesses that cause low glucose

May be caused by low levels of hormones

Reactive Hypoglycemia

Reactive hypoglycemia is a type of non-diabetic hypoglycemia.

Reactive hypoglycemia occurs exclusively after eating food. By contrast, hypoglycemia in people with diabetes is often caused by postponing or skipping meals.

Hypoglycemia in people with diabetes can also occur if they take too much insulin or diabetes medications or if they exercise vigorously without adjusting their medications or eating more food.

Reactive Hypoglycemia Symptoms and Signs

Reactive hypoglycemia can cause symptoms ranging from mild to severe. It is rarely life-threatening but may be a sign of an underlying medical condition.

Common Symptoms

Symptoms of this condition vary by how rapidly or severely blood sugar levels drop. As such, what reactive hypoglycemia feels like can differ from person to person and even episode to episode in the same person.

Some symptoms of reactive hypoglycemia include:

Shaking or tremorsHungerRapid heartbeatAnxiety or panicTingling near the mouthSweatingHeadacheFatigueInability to concentrateDilated pupilsIrritabilityRestlessnessNauseaDizzinessWeaknessLoss of muscle control

Severe Symptoms

If the drop in blood sugar is severe, it can cause profound and even debilitating symptoms. This is particularly true if the person is dehydrated.

Severe symptoms of reactive hypoglycemia include:

Confusion

Changes in behavior

Slurred speech

Clumsy movements

Blurry or double-vision

Seizures

Loss of consciousness

What Is Hypoglycemia?

When to See a Healthcare Provider

Generally speaking, a single episode of reactive hypoglycemia is not a cause for alarm unless the symptoms are severe, such as passing out or experiencing a seizure. Severe symptoms are most likely to occur if a person is dehydrated, which in itself may require treatment.

Recurrent episodes should never be overlooked. While it is possible that dietary habits are contributing to the episodes, the bigger concern is that a recurrent drop in blood sugar may be a sign of an undiagnosed medical condition, such as Addison's disease or pancreatitis.

Diagnosis

Reactive hypoglycemia can be diagnosed by measuring the amount of glucose in a person's blood while they are having symptoms. If the blood glucose level is below 70 mg/dL, your healthcare provider may recommend a mixed meal tolerance test (MMTT).

The MMTT is performed by feeding the person a beverage rich in protein, carbohydrates, and fat (such as Ensure or Boost). After drinking the beverage, blood glucose levels are retested every 30 minutes for five hours.

In addition to glucose, the MMTT will monitor insulin levels in the blood. This is a hormone produced by the pancreas that helps regulate blood sugar.

Conditions That Can Mimic Hypoglycemia

Conditions other than hypoglycemia can have some of the same symptoms, including dizziness, weakness, sweating, and rapid heartbeat.

These include a wide variety of conditions, such as:

Anxiety

Migraine headache

Heat exhaustion

Menopause

Hyperthyroidism

Syncope

To decide if your symptoms are due to hypoglycemia, your healthcare provider will look for signs of the "Whipple Triad."

This includes:

Symptoms of hypoglycemiaLow plasma glucose measurements while you have symptomsNo symptoms when your glucose increases to normal levels

Without these three indications, your healthcare provider will likely evaluate you for other conditions that have similar symptoms.

How Hypoglycemia Is Diagnosed

Reactive Hypoglycemia Causes

Triggers for reactive hypoglycemia can include eating high-carbohydrate meals or snacks. One theory as to why it occurs is that when a person eats carbs with a high glycemic index, the body produces enough insulin to combat hyperglycemia.

However, the body is not prepared for a crash because glucagon, which can counteract the action of insulin, is not adequately produced. Therefore, when blood sugar does go down, the body does not bring up the sugar by gluconeogenesis or glycogenolysis, which are processes that produce blood glucose from stored materials In the body.

There are several other conditions that are known to cause non-diabetic hypoglycemia.

Among them:

The deficiency of certain digestive enzymes can interfere with the body's ability to break down food. This, in turn, can reduce the amount of glucose available for absorption in the intestines. Causes include chronic pancreatitis, cystic fibrosis, and pancreatic cancer.

Late dumping syndrome can cause symptoms similar to those of reactive hypoglycemia after gastric bypass surgery. This complication of the surgery is when food passes through the digestive tract so quickly that not enough glucose is derived from food. Early dumping syndrome occurs when large amounts of food from your stomach move faster than normal into your duodenum, and it is unrelated to blood sugar levels.

Addison's disease causes a deficiency of hormones produced by the adrenal glands. This, in turn, can increase a person's sensitivity to insulin.

Insulinomas are rare, non-cancerous tumors in the pancreas that cause the overproduction of insulin. The overproduction, in turn, causes a drop in blood sugar. However, insulinoma usually causes more pronounced fasting hypoglycemia rather than in-between-meal hypoglycemia.

Non-insulinoma pancreatogenic hypoglycemia syndrome (NIPHS) is another rare condition that causes changes in the pancreas, leading to the overproduction of insulin.

Although there isn't a definite link, stress may affect your blood sugar because it causes a rush of adrenaline. This releases glucose into the bloodstream from temporary storage sites in your body, thereby increasing blood sugar levels. Stress can also cause some people to overeat in response to increased cortisol, a stress hormone, which can lead to a spike in blood sugar.

Too much insulin intake can cause lower levels of glucose in the blood.

Reactive Hypoglycemia Treatment

The amount of time an episode of hypoglycemia lasts will depend on how low the glucose level has dropped. If the glucose levels are extremely low and left untreated, fainting and even seizures can occur. If treated with fast-acting carbohydrates, a person may recover within 15 minutes.

An episode of reactive hypoglycemia may correct itself on its own and most of the time, people don't need medical treatment. However, if the symptoms are recurring, they may be the result of an underlying condition that needs treatment.

For an underlying medical condition, the treatment will focus on resolving or managing the condition. This may include the surgical removal of an insulinoma or, in the case of NIPHS, the partial removal of the pancreas itself.

For all other cases, there are two aspects of treatment. The first is knowing how to respond to hypoglycemic episodes. The second is making changes to prevent future episodes.

What to Eat During an Episode

If you have an episode of reactive hypoglycemia, you can use food to help restore normal blood sugar levels. This is accomplished with the "15-15 Rule," which involves eating 15 grams of fast-acting carbohydrates and checking your blood sugar 15 minutes later to see if the levels have normalized.

Carbohydrates ("carbs") are essentially sugar molecules. Fast-acting carbohydrates are certain types of foods or beverages that can quickly raise the blood sugar level. 

If the blood glucose level is still below 70 mg/dL after 15 minutes, you would eat another serving and check again in 15 minutes.

Recommended Fast-Acting Carbs

Corn syrup (1 tablespoon)Fruit juice or regular soda (1/2 cup)Glucose gel (1 small tube)Glucose tablets (3 to 4 tablets)Sugar (1 tablespoon or 5 sugar cubes)Honey or syrup (1 tablespoon)Hard candies, jellybeans, or gumdrops—see food label for how many to eatOrange juice (1/2 cup)Raisins (2 tablespoons)Banana (half)Non-fat milk (1 cup)

When treating a low, the choice of carbohydrate source is important. Limit high glycemic index (GI) foods that cause blood sugar levels to rise and then fall quickly, such as white bread, white rice, or sweetened yogurt. In addition, foods that contain fats along with carbs (like chips, cookies, or a candy bar) can slow the absorption of glucose and should not be used to treat an emergency low.

Once your symptoms have eased, have a snack if your next meal is more than 1 hour away to prevent your blood sugar from dropping again.

Some healthy options include:

Fruit and nuts or seedsGreek yogurt and berries1/2 to 1 whole sandwichSnack bar

Treating Hypoglycemia With Fast-Acting Carbs

Prevention

The cause of reactive hypoglycemia in most cases is unknown. Even so, certain dietary and lifestyle changes may reduce the odds of it happening again.

Reactive Hypoglycemia Diet

Among the diet recommendations your healthcare provider may give you:

Eat a balanced diet that includes lean protein, whole grains, vegetables, fruits, and low-fat dairy.

Limit foods that have a high glycemic index (GI). These are foods that cause a rapid increase in blood sugar followed by a rapid decline.

Eat small, frequent meals that include fiber and protein.

Do not go longer than three hours without eating.

Avoid alcohol on an empty stomach, and avoid sugary mixers.

Physical Activity

In addition, you should exercise regularly. Physical activity increases the amount of glucose taken up from the blood. This, in turn, helps stabilize insulin levels.

If you're just starting to get active, remember to work your way up to increasing your activity. It's also worth consulting with your healthcare provider before beginning.

A Guide to Low-Carb Snacks

Summary

Reactive hypoglycemia is a drop in blood glucose (sugar) that occurs after eating. Symptoms usually develop within four hours of consuming food and may include shakiness, dizziness, nausea, rapid heartbeat, and sweating. Severe cases can lead to fainting or seizures.

Reactive hypoglycemia is not related to diabetes, and the cause of most episodes is unknown. The treatment typically involves eating fast-acting carbohydrates that can quickly bring blood sugar levels back to normal.

11 Sources

Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.

American Diabetes Association. Hypoglycemia (low blood sugar).

Bansai N, Weinstock RS. Non-diabetic hypoglycemia. In: Endotext [Internet]. South Dartmouth, MA: MDText.com Inc.; 2020.

Altuntas Y. Postprandial reactive hypoglycemia. Sisli Etfal Hastan Tip Bul. 2019;53(3):215–20. doi:10.14744/SEMB.2019.59455

Galati SJ, Rayfield EJ. Approach to the patient with postprandial hypoglycemia. Endocr Pract. 2014 Apr;20(4):331-40. doi:10.4158/EP13132.RA

Stuart K, Field A, Raju J, Ramachandran S. Postprandial reactive hypoglycaemia: Varying presentation patterns on extended glucose tolerance tests and possible therapeutic approaches. Case Rep Med. 2013;2013:273957. doi:10.1155/2013/273957

Martens P, Tits J. Approach to the patient with spontaneous hypoglycemia. Eur J Intern Med. 2014 Jun;25(5):415-21. doi: 10.1016/j.ejim.2014.02.011

Boston Children's Hospital. What is hypoglycemia and low blood sugar?

Endocrine Society. Hypoglycemia.

Salehi M, Vella A, McLaughlin T, Patti ME. Hypoglycemia after gastric bypass surgery: Current concepts and controversies. J Clin Endocrinol Metab. 2018;103(8):2815–2826. doi:10.1210/jc.2018-00528

Harvard Health Publishing. Understanding the stress response.

National Institute of Digestive and Diabetes and Kidney Diseases. Low blood glucose (hypoglycemia).

By Debra Manzella, RN

Debra Manzella, MS, RN, is a corporate clinical educator at Catholic Health System in New York with extensive experience in diabetes care.

See Our Editorial Process

Meet Our Medical Expert Board

Share Feedback

Was this page helpful?

Thanks for your feedback!

What is your feedback?

Other

Helpful

Report an Error

Submit

Related Articles

Hypoglycemic Episode: Learn What to Do if It Happens to You

Can Low Blood Sugar Cause Nausea?

Does Sugar Consumption Cause Headaches?

What Is a Blood Sugar Crash?

What Are Glucose Tabs?

Can I Drink Alcohol If I Have Type 2 Diabetes?

Dangerous Blood Sugar Levels in Diabetes

Why It's Important to Monitor Glucose Levels

Type 2 Diabetes in Children

Eating Rice When You Have Diabetes

Hypoglycemia Diet

What Is Hypoglycemia?

A Guide to Low Carb Diets for Diabetes

What Is Hypoglycemia?

What Is a Sensor-Augmented Insulin Pump (SAP)?

How to Lower Fasting Blood Sugar Naturally

Daily Health Tips to Your Inbox

Email Address

Sign Up

You're in!

Thank you, {{form.email}}, for signing up.

There was an error. Please try again.

Health A-Z

Prevention & Treatment

Health Care

News

Meet Our Medical Expert Board

About Us

Editorial Process

Diversity Pledge

Privacy Policy

In the News

Advertise

Terms of Service

Careers

Contact

Follow Us

Verywell Health's content is for informational and educational purposes only. Our website is not intended to be a substitute for professional medical advice, diagnosis, or treatment.

Ⓒ 2024 Dotdash Media, Inc. — All rights reserved

Verywell Health is part of the Dotdash Meredith publishing family.

Please review our updated Terms of Service.

Sugar Crash: Symptoms, Causes, Treatment, and Prevention

Sugar Crash: Symptoms, Causes, Treatment, and Prevention

Health & WellnessWellnessWomen's HealthMen's HealthMental HealthSexual HealthRelationshipsSkin & HairSleepCBDHomePetsWeight LossTravelHealth ConditionsADHDAllergiesCold & FluDiabetesHigh CholesterolHIVIBDMental Health ConditionsMigrainesPsoriatic ArthritisSkin ConditionsSTDsFoodFoodNutritionVitamins & SupplementsVegan & Vegetarian EatingInternational FoodCooking 101Kitchen GearRecipesBreakfast & BrunchAppetizers & SnacksMain DishesSandwichesSaladsSidesDessertsDrinksFitnessFitnessWorkout TipsStrength TrainingHIITKettlebellResistance BandsRunningCyclingYogaStretchingGearWorkoutsBeginnerAbs & CoreLegsArmsButtFull BodyFavesProduct ReviewsHealthFitness & Home GymFood & CookingSkin & BeautyHome & GardenSleepSeriesThe LiftCrash CourseFirst GearDJ Gr8stGreatist ReadsHow-ToTrain for a 10KBetter Sex in 10 Days30 Days of Yoga14-Day Guide to Plant-Based EatingConnectThe Greatist CommunityInstagramFacebookTwitterPinterestTikTokSpotifyYouTubeAbout GreatistWho We AreOur Editorial ProcessOur Product Vetting ProcessContent IntegrityConscious LanguageGreatistHealth & WellnessFoodFitnessFavesConnectSubscribeNUTRITIONFoodMeal PrepDietsWeightSupplementsConditionsFitnessSugar Crash: WTF Is Reactive Hypoglycemia?Medically reviewed by Angela M. Bell, MD, FACP — By Amber Petty on January 28, 2021Without diabetesWith diabetesHypoglycemia dietSymptomsTreatmentFeeling dizzy, shaky, and anxious? It may be more than a reaction to scrolling through social media. It could be a symptom of a sugar crash, aka reactive hypoglycemia. A sugar crash is more than the lazy feeling you experience at the office after a big lunch. It’s a specific type of hypoglycemia that occurs without having diabetes.Though it’s often not serious, it can be very uncomfortable and may point to an underlying condition.What is a sugar crash? Also known as reactive or fasting hypoglycemia, a sugar crash occurs when blood sugar levels fall below 70 milligrams per deciliter, usually after a meal, according to the American Diabetes Association.Usually within 4 hours of a meal, reactive hypoglycemia is known as postprandial hypoglycemia.It’s possible to experience this type of hypoglycemia without having diabetes.Symptomsdizzinesshungershakinessanxietyconfusionincreased heart rateirritabilityCausesprediabetesrecent stomach surgeryin rare cases, a stomach enzyme deficiencymedicines like salicylates, sulfa antibiotics, pentamidine, and quinineserious heart, liver, or kidney concernslow levels of cortisol, growth hormones, glucagon, or epinephrineheavy alcohol consumptionpancreatic tumorHow to avoidEat 15 grams of carbs right after a crash.Eat small meals throughout the day.Limit sugary foods.Was this helpful?Share on PinterestDamir Khabirov/Getty ImagesReactive hypoglycemia: Sugar crashes without diabetesWould a sugar crash by any other name be quite as sweet? Yes. Sugar crashes go by many aliases, including:Reactive hypoglycemia. The symptoms develop a few hours after eating.Fasting hypoglycemia. The symptoms don’t relate to meal times and typically occur due to an underlying condition.Sugar gets a bad rap, but your brain and body need it to function. There is, ironically, a sweet spot. If blood sugar levels get too high, you’ll get hyperglycemia. Too low, and it goes hypo.When you experience reactive hypoglycemia, your blood sugar takes a dive. And you don’t feel so good.Overactive insulin causes sugar crashes. Insulin is a hormone that regulates blood glucose levels in your body. As blood sugar gets higher (like after eating), your pancreas dishes out insulin to lower glucose. If too much insulin gets out, or your body becomes more resistant to its effects, glucose can suddenly drop. Cue a no-fun sugar crash.According to the American Diabetes Association, when blood sugar gets below 70 milligrams per deciliter, that’s technically hypoglycemia. This applies whether you have diabetes or not. However, during reactive hypoglycemia, blood glucose may drop to 50 milligrams per deciliter. Though the symptoms of both are pretty much the same, reactive and fasting hypoglycemia have different causes. Causes of reactive hypoglycemiaReactive hypoglycemia happens when your pancreas goes a little insulin happy after a meal and 2 to 5 hours later, you start feeling hypoglycemic symptoms, according to a research review. Reactive hypoglycemia is a common symptom of prediabetes. If you have prediabetes, your blood glucose levels are high, but not quite high enough to get the full-on diabetes diagnosis.Prediabetes can be a symptom to help you avoid developing type 2 diabetes by giving you a heads up.This empowers you to make diet and exercise changes that help keep the “pre” in prediabetes and avoid diabetes altogether.Causes of fasting hypoglycemiaFasting hypoglycemia has a few potential and varied causes:Sometimes drinking a bunch of alcohol (especially on an empty stomach) can cause a low sugar episode.Certain medicines can trigger the sugar crash, like salicylates, sulfa drugs, pentamidine, and quinine.It could occur due to low levels of hormones (cortisol, growth hormones, glucagon, or epinephrine), Serious kidney, heart, or liver conditions can cause reactive hypoglycemia. In even rarer cases, a pancreatic tumor may be responsible.According to the National Institute of Diabetes and Digestive and Kidney Diseases, in rare cases, a sugar crash could be a symptom of dumping syndrome. This pretty much only happens if you’ve just had a stomach surgery.Blood sugar crashes with diabetesAccording to the American Diabetes Association, when you have diabetes, your body doesn’t make enough insulin to manage sugar. A hypoglycemic incident can occur if you’ve taken too much insulin or because you’re not eating enough, or if you’re cutting carbs too drastically.According to a 2013 condition overview, when you have a sugar crash without diabetes, it happens… because. There’s no clear cause for it other than your insulin and glucose going a little bananas.When to call a doctorWhichever type of sugar crash you experience, you should call a doctor.It doesn’t necessarily mean you have anything as serious as a tumor. But since it can be a symptom of something more serious, it’s best to get a checkup and make sure.What to eat so that you avoid sugar crashes The good news about reactive hypoglycemia is you can often avoid it through dietary changes.And you don’t have to quit sugar forever to avoid a crash. A good reactive hypoglycemia diet is more about balance than cutting out food groups entirely. Good foods to avoid sugar crashes:Healthy fats. Olive and fish oil, nuts, flax seeds, and avocado have healthy fats that keep you full.Fruits and vegetables. Vegetables are good for you (, right?). Choose fresh produce like leafy greens, tomatoes, onions, and peppers — anything except corn and white potatoes. But those are fine in small amounts.Whole grains. Your body digests whole grains at a slower pace than refined grains. This keeps your blood sugar relatively stable throughout the day. Try limiting highly processed carbs and grains.Lean protein. These might include meats, fish, and beans. Baked chicken, turkey, and fish are great lean proteins. Some vegetarian diets allow eggs, and these are a superb protein option. Many vegetarians don’t eat eggs. And, for the vegans in the house, beans will do the trick.Low fat dairy. Yogurt and cheese are good sources of protein and vitamin B12.In addition to maintaining this type of reactive hypoglycemic diet plan, it’s good to eat smaller meals throughout the day.Tucking into a big meal will cause your blood sugar to rise and fall more dramatically, possibly setting you up for a crash. But eating smaller meals throughout the day keeps your blood sugar stable and often wards off reactive hypoglycemia.These snacks are great for peeps with diabetes. Recognizing a sugar crash Symptoms of reactive hypoglycemia are different person to person. According to the National Institute of Diabetes and Digestive and Kidney Diseases, you could have one or more of these hypoglycemia symptoms when your blood glucose lower:shakinessanxietydizzinessconfusionexcess sweatinghungersleepinessirritabilityincreased heart rateWhat does reactive hypoglycemia feel like?The symptoms of a sugar crash come on fast, may be scary, and can make you feel like you’re going to pass out.Be sure to sit down, eat a small amount of complex carbs, and give yourself a moment to rest.Was this helpful?Symptoms of reactive hypoglycemia are very similar to diabetic hypoglycemia, though the version accompanying diabetes can be a bit more severe.Diabetic hypoglycemia symptoms can also include:feeling weaktingling or numbness in your lipscoordination problemsseizuresnightmaresBlood-sugar-induced nightmares don’t sound fun (who needs to dream of dancing pastries with blood-soaked fangs?) So, be sure to maintain a balanced diet and take any prescribed medicine as instructed by your healthcare provider.Treating reactive hypoglycemiaNobody wants to be hungry, confused, or irritable. Just ask people waiting for a table at a restaurant.Thankfully, sugar crashes are pretty easy to manage. Treatment may vary depending on the cause of the reactive hypoglycemia.How to treat a sugar crashAccording to the American Diabetes Association, when you first recognize a symptom of reactive hypoglycemia, you should eat 15 grams of carbohydrates:Drink some juice.Take a glucose tablet.Suck on a hard candy.If you don’t have a hard candy around, go for some bread, a banana, or another carb. These will help return your blood sugar levels to normal.Carbs are the order of the day here. Fats or proteins won’t raise your blood sugar quickly enough. This means your symptoms will hang around longer.If the symptoms don’t go away in 15 minutes (or if you check your blood glucose, and it’s still under 70 milligrams per deciliter), consume another 15 grams of carbs.While you’re having this snack, stay seated, drink water, and try to remain calm. The carbs will work their magic and the symptoms will resolve. You can also try to reverse type 2 diabetes.How to prevent sugar crashesThe best way to prevent postprandial hypoglycemia is to maintain a balanced diet:Keep your carbs complex.Eat fruits and vegetables. Be sure to include some healthy fats and proteins with every meal. By eating like this five to six times a day, you’ll help keep your blood sugar level regular. You don’t need to cut all sugar. But try to keep the treats to a minimum. Lots of cakes and candies will put you on a blood sugar roller coaster.Instead, eat fruits to stave off sugar cravings and have your sugary goodies every once in a while.Sadly, we can’t always be by the kitchen to eat six meals a day. When you’re out and about, be sure to always carry a healthy snack. (Yes, you get to keep emergency snacks. It’s for your health.) If you have fasting hypoglycemia, it’s also good to follow these dietary ideas but more important to treat the underlying condition. Work with your doctor to find a treatment that prevents sugar crashes.How to test for blood sugar crashesIf you have a blood glucose monitor on hand, you can test yourself during a crash to see if you’re hypoglycemic. But you need testing from a doctor to get a diagnosis and rule out diabetes as a cause.If the doctor suspects reactive or postprandial hypoglycemia, you might be asked to do a mixed-meal tolerance test, according to a small research review. Despite the name, it has nothing to do with how much of a stomach ache you get after eating at a restaurant.Instead, you’ll drink a liquid meal with proteins, fats, and sugar, then have your blood sugar tested multiple times over 5 hours. This tests how your blood sugar reacts when you’re fasting, right after a meal, and hours later.A doctor will ask peeps with potential fasting hypoglycemia to fast for up to 72 hours. Over those few days, they’ll test your blood sugar multiple times.Neither of these tests are invasive or painful. They mostly involve a lot of sitting around and, for peeps with fasting hypoglycemia, a rumbly tummy.These tests will help the doctor determine the exact cause of your reactive hypoglycemia and make sure it’s not a symptom of type 2 diabetes. The diagnosis should come back in a couple of days.After that, you can start dietary changes right away to avoid future sugar crashes.Do I need testing after a sugar crash?It’s important to receive testing after a sugar crash.This is because reactive hypoglycemia can be a symptom of an underlying condition. Without treatment, it can also lead to diabetes. Diabetes can lead to heart disease, kidney disease, stroke, and other health concerns, according to National Institute of Diabetes and Digestive and Kidney Diseases. So, it’s best to get a formal diagnosis and start treating your sugar crashes before symptoms gets worse.Was this helpful?TakeawaySugar crashes can happen even if you don’t have diabetes.If you get spells of dizziness, irritability, hunger, or an increased heart rate, call a doctor as soon as you can (especially if these spells often happen).After diagnosis, a balanced diet of complex carbs, healthy fats, and protein can drastically reduce symptoms. Plus, you have a medical excuse to carry around emergency snacks. Last medically reviewed on January 28, 2021 9 sourcescollapsedAltuntaş Y. (2019). Postprandial reactive hypoglycemia.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7192270/Dumping syndrome. (n.d.).https://www.niddk.nih.gov/health-information/digestive-diseases/dumping-syndromeEckert-Norton M, et al. (2013). Non-diabetic hypoglycemia.https://academic.oup.com/jcem/article/98/10/39A/2833336Hypoglycemia (low blood sugar). (n.d.).https://www.diabetes.org/healthy-living/medication-treatments/blood-glucose-testing-and-control/hypoglycemiaLow blood glucose (hypoglycemia). (2016).https://www.niddk.nih.gov/health-information/diabetes/overview/preventing-problems/low-blood-glucose-hypoglycemiaNational Institute of Diabetes and Digestive and Kidney Disorders. (2016). Diabetes diet, eating, & physical activity.https://www.niddk.nih.gov/health-information/diabetes/overview/diet-eating-physical-activity#:~:text=Instead%2C%20eat%20carbohydrates%20from%20fruit,of%20your%20diabetes%20meal%20planRuan Y, et al. (2019). Mixed-meal tolerance test to assess residual beta-cell secretion: Beyond the area-under-curve of plasma C-peptide concentration.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6487945/Understanding A1C: Diagnosis. (n.d.).https://www.diabetes.org/a1c/diagnosisWhat is diabetes? (2016).https://www.niddk.nih.gov/health-information/diabetes/overview/what-is-diabetesFEEDBACK:Medically reviewed by Angela M. Bell, MD, FACP — By Amber Petty on January 28, 2021Read this next18 No-Sugar Breakfast Recipes to Avoid an Early CrashStart your day off right with one of these healthy breakfast ideas that have zero added sugar. All of the sweetness comes from natural sources. You…READ MORE21 Ways to Beat the Afternoon SlumpAlways feel tired around 3 p.m.? It’s normal to feel the drain during a long workday. Try these science-backed tips for an afternoon pick-me-up.READ MORESnack on This! The Ultimate Diabetes Snack GuideHealthy snacking doesn’t have to be boring! These foods, recipes, and ready-to-eat snacks will help you keep your blood sugar in check. So check out…READ MOREHere’s What Diabetes Can Do to Your Body Over TimeDiabetes can lead to many other health issues. Here's a rundown of the top 13 diabetes-related conditions to look out for and how you can prevent them.READ MOREWhat Is the Ayurvedic Diet? Foods, Doshas, and MoreThe Ayurvedic diet is a holistic approach to nutrition rooted in Ayurveda, an ancient Indian system of medicine. It emphasizes balancing individual…READ MORECarb Cycling: What Is It and How Does It Work?Carb cycling is a dietary approach that involves alternating between high and low carb days to optimize energy levels, fat loss, and muscle…READ MOREWhat's the 80/20 Rule Diet and Does It Work?Curious if the 80/20 diet will help you lose weight? Here's how (and if!) it works.READ MOREWhat Is the Golo Diet: Does It Work and Is It Safe?READ MOREPotato Diet: Can It Help You Lose Weight?The potato diet *might* help you lose weight. But is it healthy? Spoiler alert: No. Read on to find out more!READ MOREAbout UsContact UsTerms of UsePrivacy PolicyPrivacy SettingsAdvertising PolicyMedical AffairsContent IntegrityNewsletter© 2024 Greatist, a Healthline Media Company. Our content does not constitute a medical consultation. See a certified medical professional for diagnosis. See additional information.© 2024 Greatist, a Healthline Media Company. Our content does not constitute a medical consultation. See a certified medical professional for diagnosis. See additional information.AboutCareersAdvertise with usOUR BRANDSHealthlineMedical News TodayGreatistPsych CentralBezzy

Reactive hypoglycemia: What causes it? - Mayo Clinic

Reactive hypoglycemia: What causes it? - Mayo Clinic

This content does not have an English version.

This content does not have an Arabic version.

Skip to contentCare at

Mayo Clinic Patient-Centered Care About Mayo Clinic Request Appointment Find a Doctor Locations Clinical Trials Connect to Support Groups Patient & Visitor Guide Insurance & Billing Departments & Centers International Services Contact UsPatient & Visitor Guide Health

Library Diseases & Conditions Symptoms Tests & Procedures Drugs & Supplements Healthy Lifestyle Books & SubscriptionsDiseases & Conditions For Medical

Professionals Medical Professional Resources Refer a Patient Continuing Medical Education AskMayoExpert Mayo Clinic Laboratories Video Center Journals & Publications Mayo Clinic Alumni AssociationContinuing Medical Education Research & Education

at Mayo ClinicResearch Research at Mayo Clinic Research Faculty Laboratories Core Facilities Centers & Programs Departments & Divisions Clinical Trials Institutional Review Board Postdoctoral Fellowships Training Grant ProgramsEducation Mayo Clinic College of Medicine and Science Mayo Clinic Graduate School of Biomedical Sciences Mayo Clinic Alix School of Medicine Mayo Clinic School of Graduate Medical Education Mayo Clinic School of Health Sciences Mayo Clinic School of Continuous Professional DevelopmentMayo Clinic College of Medicine and Science Giving to

Mayo Clinic Give Now Giving to Mayo Clinic Frequently Asked Questions Contact Us to GiveMake a Donation Request appointment Log inSearchMenu Request appointment Donate Diseases & conditions Find a doctorCare at Mayo Clinic Patient-Centered Care About Mayo Clinic Request Appointment Find a Doctor Locations Clinical Trials Connect to Support Groups Patient & Visitor Guide Insurance & Billing Departments & Centers International Services Contact UsPatient & Visitor Guide Health Library Diseases & Conditions Symptoms Tests & Procedures Drugs & Supplements Healthy Lifestyle Books & SubscriptionsDiseases & Conditions For Medical Professionals Medical Professional Resources Refer a Patient Continuing Medical Education AskMayoExpert Mayo Clinic Laboratories Video Center Journals & Publications Mayo Clinic Alumni AssociationContinuing Medical Education Research & Education at Mayo ClinicResearch Research at Mayo Clinic Research Faculty Laboratories Core Facilities Centers & Programs Departments & Divisions Clinical Trials Institutional Review Board Postdoctoral Fellowships Training Grant ProgramsEducation Mayo Clinic College of Medicine and Science Mayo Clinic Graduate School of Biomedical Sciences Mayo Clinic Alix School of Medicine Mayo Clinic School of Graduate Medical Education Mayo Clinic School of Health Sciences Mayo Clinic School of Continuous Professional DevelopmentMayo Clinic College of Medicine and Science Giving to Mayo Clinic Give Now Giving to Mayo Clinic Frequently Asked Questions Contact Us to GiveMake a Donation

Appointments at Mayo Clinic

Mayo Clinic offers appointments in Arizona, Florida and Minnesota and at Mayo Clinic Health System locations.

Request Appointment

Reactive hypoglycemia: What can I do?

Sections

Products and services

I think I have reactive hypoglycemia. What can I do for my symptoms?

Answer From M. Regina Castro, M.D.

Hypoglycemia is the medical term for low blood sugar. Reactive hypoglycemia, sometimes called postprandial hypoglycemia, happens when blood sugar drops after a meal — usually within four hours after eating.

Symptoms of hypoglycemia may include:

Shakiness.

Dizziness or lightheadedness.

Sweating.

Hunger.

A fast or uneven heartbeat.

Feeling weak or tired.

Feeling irritable or anxious.

Headache.

Confusion.

In people who have diabetes, insulin or other medicine that's used to lower blood sugar sometimes can lead to hypoglycemia after eating. A change to the medicine dosage may help.

In people who don't have diabetes, the cause of reactive hypoglycemia often isn't clear. But symptoms may be connected to what and when a person eats.

Other possible causes of reactive hypoglycemia include:

Alcohol.

Some surgical procedures, such as gastric bypass or other bariatric surgery.

Metabolic conditions that are passed down in families, also called inherited metabolic disorders.

Certain types of tumors.

A medical evaluation usually is done to see if symptoms are caused by low blood sugar, and if so, whether symptoms get better when blood sugar returns to normal. More testing may be needed if symptoms are severe.

Reactive hypoglycemia usually doesn't require medical treatment. But if another health condition is causing it, that condition needs to be treated. The following diet changes may help ease symptoms:

Eat a balanced diet that includes high-fiber foods, such as whole grains, fruits and vegetables.

Avoid sugary foods and processed simple carbohydrates, such as white bread or white pasta, especially on an empty stomach.

When drinking alcohol, eat food with it.

Eat several small meals and snacks about three hours apart throughout the day.

Exercise on a regular basis.

With

M. Regina Castro, M.D.

 

There is a problem with

information submitted for this request. Review/update the

information highlighted below and resubmit the form.

From Mayo Clinic to your inbox

Sign up for free and stay up to date on research advancements, health tips, current health topics, and expertise on managing health. Click here for an email preview.

Email

ErrorEmail field is required

ErrorInclude a valid email address

Learn more about Mayo Clinic’s use of data.

To provide you with the most relevant and helpful information, and understand which

information is beneficial, we may combine your email and website usage information with

other information we have about you. If you are a Mayo Clinic patient, this could

include protected health information. If we combine this information with your protected

health information, we will treat all of that information as protected health

information and will only use or disclose that information as set forth in our notice of

privacy practices. You may opt-out of email communications at any time by clicking on

the unsubscribe link in the e-mail.

Subscribe!

Thank you for subscribing!

You'll soon start receiving the latest Mayo Clinic health information you requested in your inbox.

Sorry something went wrong with your subscription

Please, try again in a couple of minutes

Retry

Diabetes and liverDiabetes foods: Can I substitute honey for sugar?

ShareTweet

April 13, 2023

Show references

Low blood glucose (hypoglycemia). National Institute of Diabetes and Digestive and Kidney Diseases. https://www.niddk.nih.gov/health-information/diabetes/overview/preventing-problems/low-blood-glucose-hypoglycemia. Accessed Feb. 9, 2023.

Gardner DG, et al., eds. Hypoglycemic disorders. In: Greenspan's Basic & Clinical Endocrinology. 10th ed. McGraw-Hill; 2018. https://accessmedicine.mhmedical.com. Accessed Feb. 9, 2023.

Loscalzo J, et al., eds. Hypoglycemia. In: Harrison's Principles of Internal Medicine. 21st ed. McGraw Hill; 2022. https://accessmedicine.mhmedical.com. Accessed Feb. 10, 2023.

Vella A. Evaluation of postprandial hypoglycemia in adults without diabetes. https://www.uptodate.com/ contents/search. Accessed Feb. 10, 2023.

Hypoglycemia. Merck Manual Professional Version. https://www.merckmanuals.com/professional/endocrine-and-metabolic-disorders/diabetes-mellitus-and-disorders-of-carbohydrate-metabolism/hypoglycemia. Accessed Feb. 10, 2023.

See more Expert Answers

Products and ServicesThe Mayo Clinic Diet OnlineA Book: The Essential Diabetes Book

See alsoMedication-free hypertension controlA1C testAlcohol: Does it affect blood pressure?Alpha blockersAmputation and diabetesAngiotensin-converting enzyme (ACE) inhibitorsAngiotensin II receptor blockersAnxiety: A cause of high blood pressure?Artificial sweeteners: Any effect on blood sugar?Bariatric surgeryBeta blockersBeta blockers: Do they cause weight gain?Beta blockers: How do they affect exercise?Blood glucose metersBlood glucose monitorsBlood pressure: Can it be higher in one arm?Blood pressure chartBlood pressure cuff: Does size matter?Blood pressure: Does it have a daily pattern?Blood pressure: Is it affected by cold weather?Blood pressure medication: Still necessary if I lose weight?Blood pressure medications: Can they raise my triglycerides?Blood pressure readings: Why higher at home?Blood pressure tip: Get more potassiumBlood sugar levels can fluctuate for many reasonsBlood sugar testing: Why, when and howBone and joint problems associated with diabetesPancreas transplant animationCaffeine and hypertensionCalcium channel blockersCalcium supplements: Do they interfere with blood pressure drugs?Can whole-grain foods lower blood pressure?Central-acting agentsChoosing blood pressure medicinesCOVID-19: Who's at higher risk of serious symptoms?DiabetesDiabetes and depression: Coping with the two conditionsDiabetes and exercise: When to monitor your blood sugarDiabetes and heat10 ways to avoid diabetes complicationsDiabetes diet: Should I avoid sweet fruits?Diabetes diet: Create your healthy-eating planDiabetes foods: Can I substitute honey for sugar?Diabetes and liverDiabetes management: How lifestyle, daily routine affect blood sugarDiabetes symptomsDiabetes treatment: Can cinnamon lower blood sugar?Using insulinDiabetic GastroparesisDiureticsDiuretics: A cause of low potassium?Erectile dysfunction and diabetesHigh blood pressure and exerciseExercise and chronic diseaseFatigueFree blood pressure machines: Are they accurate?Frequent urinationHome blood pressure monitoringGlucose tolerance testGlycemic index: A helpful tool for diabetes?HemochromatosisHigh blood pressure (hypertension)High blood pressure and cold remedies: Which are safe?High blood pressure and sexHigh blood pressure dangersWhat is hypertension? A Mayo Clinic expert explains.Hypertension FAQsHypertensive crisis: What are the symptoms?Insulin and weight gainIsolated systolic hypertension: A health concern?Kidney disease FAQsL-arginine: Does it lower blood pressure?Late-night eating: OK if you have diabetes?Low-phosphorus diet: Helpful for kidney disease?Medications and supplements that can raise your blood pressureMenopause and high blood pressure: What's the connection?Infographic: Pancreas Kidney TransplantPancreas transplantPulse pressure: An indicator of heart health?Resperate: Can it help reduce blood pressure?Sleep deprivation: A cause of high blood pressure?StatinsStress and high blood pressureThe dawn phenomenon: What can you do?Unexplained weight lossVasodilatorsVegetarian diet: Can it help me control my diabetes?How to measure blood pressure using a manual monitorHow to measure blood pressure using an automatic monitorWhat is blood pressure?Can a lack of vitamin D cause high blood pressure?Weight Loss Surgery OptionsWhite coat hypertensionWrist blood pressure monitors: Are they accurate?Show more related content

Advertisement

Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission.

Advertising & Sponsorship

Policy

Opportunities

Ad Choices

Mayo Clinic Press

Check out these best-sellers and special offers on books and newsletters from Mayo Clinic Press.

Mayo Clinic on Incontinence - Mayo Clinic PressMayo Clinic on IncontinenceThe Essential Diabetes Book - Mayo Clinic PressThe Essential Diabetes BookMayo Clinic on Hearing and Balance - Mayo Clinic PressMayo Clinic on Hearing and BalanceFREE Mayo Clinic Diet Assessment - Mayo Clinic PressFREE Mayo Clinic Diet AssessmentMayo Clinic Health Letter - FREE book - Mayo Clinic PressMayo Clinic Health Letter - FREE book

.

FAQ-20057778

Home

Reactive hypoglycemia What can I do

Your gift holds great power – donate today! DonateMake your tax-deductible gift and be a part of the cutting-edge research and care that's changing medicine.

Donate

Find a doctor Explore careers Sign up for free e-newslettersAbout Mayo Clinic About this Site Contact Us Locations Health Information Policy Media Requests News Network Price TransparencyMedical Professionals AskMayoExpert Clinical Trials Mayo Clinic Alumni Association Refer a PatientBusinesses Executive Health Program International Business Collaborations Facilities & Real Estate Supplier InformationMedical Professionals AskMayoExpert Clinical Trials Mayo Clinic Alumni Association Refer a PatientBusinesses Executive Health Program International Business Collaborations Facilities & Real Estate Supplier InformationStudents Admissions Requirements Degree Programs Student & Faculty PortalStudents Degree Programs Admissions Requirements Student & Faculty PortalResearchers Research Faculty LaboratoriesInternational Patients Appointments Financial Services International Locations & OfficesCharitable Care & Financial Assistance Community Health Needs Assessment Financial Assistance Documents – Arizona Financial Assistance Documents – Florida Financial Assistance Documents – MinnesotaFollow Mayo Clinic X Youtube Facebook Linkedin InstagramGet the Mayo Clinic app

Terms & Conditions Privacy Policy Notice of Privacy Practices Notice of Nondiscrimination Accessibility Statement Advertising & Sponsorship Policy Site Map Manage Cookies Terms and Conditions Privacy Policy Notice of Privacy Practices Notice of Nondiscrimination Accessibility Statement Advertising and Sponsorship Policy Site Map Manage CookiesLanguage:English English Español العربية 简体中文© 1998-2024 Mayo Foundation for Medical Education and Research (MFMER). All rights reserved.

Language:English English Español العربية 简体中文

Blood Sugar Crash (Reactive Hypoglycemia): Causes, Symptoms, Prevention – Lets Moderate

Blood Sugar Crash (Reactive Hypoglycemia): Causes, Symptoms, Prevention

– Lets Moderate

Skip to content

Home

Shop by Format

Shop by Format

Moderate Powder | Mix with Food

Moderate Tablet | Have before Meal

Science

Contact

About us

Blog

Track your order

Free Dietitian Consultation

Login

Log in

Facebook

Instagram

YouTube

Search

Home

Shop by Format

Moderate Powder | Mix with Food

Moderate Tablet | Have before Meal

Science

Contact

About us

Blog

Track your order

Free Dietitian Consultation

Login

Buy

Item added to your cart

View cart

Check out

Continue shopping

Home

Blog

What is Blood Sugar Crash (Reactive Hypoglycemia)?

What is Blood Sugar Crash (Reactive Hypoglycemia)?

Updated on Dec 06, 2023 & Medically Reviewed by Dr Lalitha

A sugar crash, also known as a "sugar low" or "sugar comedown," medically known as “hypoglycemia” refers to the phenomenon of experiencing a sudden drop in blood sugar levels after a rapid rise caused by the consumption of high-sugar or high-carbohydrate foods. It is the opposite effect of a sugar rush.

When you consume foods rich in sugar or simple carbohydrates, your body rapidly digests and absorbs these carbohydrates, rapidly increasing blood sugar levels. In response, the pancreas releases insulin to help transport the glucose from the bloodstream into cells for energy utilization and storage.

However, consuming excessive amounts of sugar or simple carbohydrates can result in an exaggerated insulin release. This can cause blood sugar levels to drop rapidly below normal levels, leading to a sugar crash.

Blood Sugar Crash (Hypoglycemia) Symptoms:

The severity and duration of a sugar crash can vary among individuals, but common symptoms may include:

Fatigue and Lethargy: A sudden drop in blood sugar levels can cause feelings of tiredness, sluggishness, and a lack of energy.

Hunger and Cravings: Low blood sugar levels can trigger hunger pangs and intense cravings, particularly for sugary or high-carbohydrate foods.

Irritability and Mood Swings: Fluctuations in blood sugar levels can affect mood, leading to irritability, mood swings, and difficulty concentrating.

Shaking or Trembling: Some individuals may experience physical symptoms such as trembling, shakiness, or lightheadedness.

Headache: A sugar crash can sometimes be accompanied by a headache or feelings of dizziness.

What Causes Sugar Crash (Reactive Hypoglycemia)?

Some of the common causes of sugar crashes in people having unbalanced diets or taking too much insulin in their daily life.

Medication: Diabetes drugs, which are used to reduce blood sugar levels, may cause hypoglycemia if taken in excess.

Not Enough Carbs: Eating fewer carbohydrates than normal without decreasing insulin consumption can contribute to hypoglycemia.

During Stomach surgery, which makes food passes to quickly into the small intestine.

Exercises: During exercises, the body uses glucose faster. Having low carbs or too much insulin cause a blood sugar crash.

How to Prevent Sugar Crash (Reactive Hypoglycemia)?

To maintain stable blood sugar levels and avoid frequent sugar crashes, it is advisable to follow these simple tips.

Consume a well-balanced diet(includes a variety of nutrient-dense foods, including whole grains, lean proteins, healthy fats, and plenty of fruits and vegetables).

Small and frequent meals.

Staying Active

Reducing stress

Keeping Hydrated

Adequate sleep

This approach helps provide sustained energy and promotes overall health and well-being. If it’s difficult to combine each meal with all the above, don’t worry, there is always moder/ate™.

What is moder/ate (Moderate Tablet)?

A natural trademarked botanical extract that helps reduce the absorption of carbohydrates and calories into the body, by up to 40% after consuming them. It helps reduce the post-meal sugar and insulin spikes. It has been scientifically proven to be safe and effective, by reducing the post meal sugar spikes by upto 40%, with a positive effect on Insulin spike also.

You can check for yourself. Eat a carb rich meal/breakfast and check your blood sugar levels at 30 min and 60 min post meal. Next day eat the same meal / breakfast after taking a tablet of Moderate 10 min before eating. Then check your blood sugar levels again at 30 min and 60 min post meal. You will see the decrease in blood sugar levels after taking Moderate. This means that you can eat the same quantity of food, but your post meal sugar load and calorie load that enters into the body is lesser by upto 40%. 

 

The Main Benefits of Using Moderate Tablets are

By taking this, it reduces the absorption of carbohydrates/ sugars and calories into the body, thereby reducing the glucose spikes after having heavy glucose/carb meals.

Controls hunger pangs by preventing Glucose crashes. It helps maintains stable blood sugar levels.

Promotes gut health and microbial development, which contributes to overall health.

Aids in conscious eating.

It works best when it is taken 10 minutes before the meal so that it slows down the enzymes that break down carbs and also reduces the glucose absorption nt your body. more effectively and gives you the maximum benefits by limiting blood sugar spiking. This unabsorbed carbs and glucose reach your large intestine and act as prebiotics ( food) for your good gut bacteria, thereby contributing to your GUT health and overall wellbeing.

FAQs:

Q) How to Break the Sugar Crash (Reactive Hypoglycemia)?

A) A sugar crash is a sudden drop in blood sugar levels after consuming a high amount of sugar. To stop this include Balanced meals with low glycemic index foods, Including protein, fiber, and healthy fats, and avoiding sugary beverages, processed foods, and refined sugars in your diet.

Q) Are Sugar Crashes Bad?

A) Sugar crashes, also known as Reactive Hypoglycemia. They indicate problems with blood sugar management, which can lead to consequences if left untreated. Fatigue, weakness, disorientation, irritability, and increased hunger are some symptoms. While not intrinsically hazardous, they have an impact on well-being and can contribute to blood sugar instability, weight gain, and diabetes risk. Consult a healthcare expert for an assessment and recommendations on managing blood sugar levels through dietary and lifestyle modifications.

Q) Does a Sugar Crash Make You Feel Sleepy?

A) Yes, a sugar crash can cause sleepiness. Consuming a large amount of sugar can cause a rapid spike in your blood sugar levels. However, this is followed by a quick drop in blood sugar levels, which can lead to feelings of fatigue, sleepiness, and a general lack of energy. To avoid these crashes and associated sleepiness it is critical to maintain stable blood sugar levels by eating balanced meals and avoiding excessive sugar intake.

Also Read the Related Articles:

11 Reasons Why Excess Sugar Consumption is Bad for Your Health?

How Do Blood Sugar Levels Fluctuate Over Time After Meal?

Effects of Sugary Foods (Like Sweets) and Beverages on Blood Sugar Levels

How to Manage Stress to Control Blood Sugar Levels in Diabetics?

Share This Article:

Disclaimer: The information provided on this page is not a substitute for professional medical advice, diagnosis, or treatment. If you have any questions or concerns about your health, please talk to a healthcare professional.

Related Articles

Type 1 Diabetes Mellitus Causes, Risk Factors and Symptoms

What is Diabetic Nephropathy? Diabetic Nephropathy Causes...

Is Dragon Fruit Good for Diabetes?

Back to blog

Leave a comment

Name

*

Email

*

Comment

*

Please note, comments need to be approved before they are published.

Buy Now

Home

Moderate

Blog

About Us

Contact Us

Track your order

Get in Touch

+91-04048957005 support@letsmoderate.com

Facebook

Instagram

YouTube

LinkedIn

Payment Options

© 2024, Lets Moderate

Powered by Shopify

Refund policy

Terms of service

Privacy policy

Choosing a selection results in a full page refresh.

Opens in a new window.