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Does Blood Sugar Go Up After Eating


Blood Sugar Chart For Non Diabetic

Clearing Up Myths About Blood Sugars After Eating

Normal Blood Sugar Ranges after Eating Your blood sugar or blood glucose levels starts to rise soon after you start to eat and is at its highest 1 to 2 hours after your meal. Normal postprandial, which means after eating, glucose levels are 6.67 mmol/L and below for non-diabetics, 8.83 mmol/L. and below for those with pre-diabetes and 10 mmol/L for diabetics.

How To Deal With High Postprandial Blood Sugar Levels

Obviously, check your levels first meaning at least 90 minutes after a meal. Why? By that time rapid-acting analog insulin has reached its maximum effect By the way, the blood sugar reminder in the mySugr app is a great way to check your glucose after a meal. After all, no one can be expected to remember everything! Just set the reminder for a specific time and youll automatically be reminded. If you have type 1 diabetes, your blood sugar should be between 5 and 9 mmol/liter at least 90 minutes after eating . Of course, your doctor may recommend another postprandial level according to your personal needs and state of health

Your Blood Sugar Isnt Just Because Of What You Eat

Mainstream media would have you believe that your blood sugar levels are impacted only by what you eat and how much you exercise, but people with type 1 and type 2 diabetes who test their blood sugars frequently could tell you otherwise.

Its especially important to keep this mind when looking at your own blood sugars and your goals because there are certain variables and challenges that impact blood sugar levels that you cant always control.


For example:

  • Menstrual cycles: raises blood sugar and insulin needs
  • Adrenaline rushes from competitive sports, heated arguments, rollercoaster rides: raises blood sugar and insulin needs
  • The common cold and other illnesses: usually raises blood sugar and insulin needs
  • Hormonal changes due to puberty and healthy growth in young adults: raises blood sugar and insulin needs
  • An injury which raises overall inflammation levels: raises blood sugar and insulin needs
  • Glucogenesis during anaerobic exercise: raises blood sugar

While you cant necessarily prevent these factors that affect your blood sugar from occurring, you can work with your diabetes healthcare team to adjust your insulin, other diabetes medications, nutrition and activity levels to help compensate for them when they do occur.

For example, when engaging in anaerobic exercise like weightlifting many people with type 1 diabetes find it necessary to take a small bolus of insulin prior to or during their workout because anaerobic exercise can actually raise blood sugar.

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Whats A Spike And Why Do They Happen

After-meal, or postprandial, spikes are temporary high blood glucose levels that occur soon after eating. It is normal for the level of glucose in the blood to rise a small amount after eating, even in people who do not have diabetes. However, if the rise is too high, it can affect your quality of life today and contribute to serious health problems down the road.


Choose The Right Medication

Clearing Up Myths About Blood Sugars After Eating

Two classes of injectable hormones, GLP-1 receptor agonists and amylin mimetics, have powerful effects on post-meal blood sugar. Both GLP-1s and Symlin slow gastric emptying and keep carbohydrates from raising the blood sugar too quickly after meals. Symlin, which is a replacement for the amylin hormone , also helps to diminish appetite and blunt post-meal glucagon secretion. GLP-1s blunts appetite and promote the growth of insulin-producing cells in the pancreas of those with type-2. So both can contribute to better post-meal blood sugar control.

For type-2s, the choice of oral medication can also impact your after-meal control. Sulfonylureas stimulate the pancreas to secrete extra insulin throughout the day, without regard to meal timing. There are alternative medications called meglitinides which also stimulate the pancreas but do so in a much faster and shorter manner. When taken at mealtimes, meglitinides produce better after-meal control than sulfonylureas.

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Carbohydrates And Blood Sugar

When people eat a food containing carbohydrates, the digestive system breaks down the digestible ones into sugar, which enters the blood.

  • As blood sugar levels rise, the pancreas produces insulin, a hormone that prompts cells to absorb blood sugar for energy or storage.
  • As cells absorb blood sugar, levels in the bloodstream begin to fall.
  • When this happens, the pancreas start making glucagon, a hormone that signals the liver to start releasing stored sugar.
  • This interplay of insulin and glucagon ensure that cells throughout the body, and especially in the brain, have a steady supply of blood sugar.

Carbohydrate metabolism is important in the development of type 2 diabetes, which occurs when the body cant make enough insulin or cant properly use the insulin it makes.


  • Type 2 diabetes usually develops gradually over a number of years, beginning when muscle and other cells stop responding to insulin. This condition, known as insulin resistance, causes blood sugar and insulin levels to stay high long after eating. Over time, the heavy demands made on the insulin-making cells wears them out, and insulin production eventually stops.

Time To Strike High Blood Glucose

Given the many short- and long-term benefits of post-meal blood glucose control, it is certainly worth the effort to start measuring and evaluating your after-meal control. If your blood glucose levels are higher than they should be, talk with your healthcare team about new or different medical treatments that might help. And take a look at your personal choices in terms of food and activity. Even without a perfectly functioning pancreas, there is still a multitude of options for tackling those high blood glucose spikes!

Disclaimer Statements: Statements and opinions expressed on this Web site are those of the authors and not necessarily those of the publishers or advertisers. The information provided on this Web site should not be construed as medical instruction. Consult appropriate health-care professionals before taking action based on this information.

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Fat Fiber And Mixed Meals

Other foods you eat with carbohydrate-containing foods usually slow down the rise in your blood sugar levels in the post-meal period. For example, fat, fiber and protein all have the ability to delay gastric emptying. If it takes more time for your stomach to churn your food before releasing its content into your intestines where it can be absorbed, the increase in your blood sugar levels can be delayed. For example, even high-glycemic foods won’t raise your blood sugar levels as quickly if consumed with butter, extra vegetables and a serving of chicken.

Choose The Healthiest Carbohydrates

Can You Quickly Lower Glucose When It Spikes After Eating?

Of the major nutrients found in food carbs, protein, and fat carbs have the biggest effect on your blood sugar. Thats because carbs are the most quickly broken down into glucose for energy. Having too many carbs, or the wrong type of carbs, can lead to spikes in your blood sugar.

The best way to figure out how the carbs you eat affect your blood sugar is to test your levels before and after meals. The American Diabetes Association recommends keeping track of the number of carbs you have per meal. The amount you should eat may vary depending on what it looks like to successfully manage your diabetes. Choose healthy, complex carbs such as whole fruits and vegetables, whole grains, beans, and lentils. Because they contain fiber and are less processed, these foods dont lead to as many swings in your blood sugar levels. Stay away from refined carbs such as soda, candy, white pasta, white rice, white bread, and other processed foods they can cause blood sugar to rise quickly.

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Blood Sugar Levels After Eating Sweets And Other High

What is considered the blood sugar levels normal range may vary from health care provider to health care provider, but generally speaking, values between 70 mg/dL and 120 mg/dL are considered appropriate blood sugar levels after eating for persons that do not have diabetes when measured about two hours following a meal.


Why Would You Have High Blood Sugar If You Have Not Eaten

When you have diabetes, your blood sugar can be high no matter when you last ate, because the glucose metabolism process isn’t working properly. This is actually how diabetes is diagnosed. A blood sugar test is done after a 12-hour fast when you have not taken anything except water. If your blood sugar is between 100 and 125 mg/dL, it’s …

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Glycemic Index And Blood Sugar

Only carbohydrate-containing foods have a glycemic index, which can be used to assess how quickly and how high your blood sugar levels will rise in response to different foods. Many high-glycemic foods can raise your blood sugar levels within as little as 15 minutes after eating, including white and whole-wheat bread, most breakfast cereals, rice, potatoes, french fries, scones and pretzels. Low-glycemic foods have a more modest effect on your blood sugar levels and it may take a bit longer to see a rise. The rise in your blood sugar levels is first seen in your venous blood, the blood drawn at the lab, and it takes a bit longer for the changes in your blood sugar levels to be measured in your capillary blood, the blood used when testing your blood sugars at home.

Keeping Your Blood Sugar Steady

Hypos and Low Blood Sugar: All you need to know

With certain strategies, you can help prevent spikes in your blood sugar levels, says Toby Smithson, RD, LDN, CDE,a spokesperson for the Academy of Nutrition and Dietetics and the founder of DiabetesEveryday.com.

Rather than focus on things you shouldn’t have, try incorporating the following foods and healthy habits into your daily type 2 diabetes routine:


Go nuts. Nuts such as almonds, walnuts, and pistachios contain healthy fat that slows the body’s absorption of sugar. But be sure to limit how many nuts you eat in one sitting because even healthy fats contain calories, Smithson says. Just six almonds or four pecan halves have the same number of calories as one teaspoon of butter.

Eat whole grains. Oat bran, barley, and rye are fiber-rich foods that contain beta-glucan. This soluble fiber increases the amount of time it takes for your stomach to empty after eating and prevents spikes in blood sugar. Remember, though, that these foods are still carbohydrates. “Whole grains will still raise your blood sugar, just not as quickly and as high as processed foods,” Li-Ng says.

Veg out. Packed with fiber, non-starchy vegetables such as broccoli, cucumber, and carrots can also help prevent surges in blood sugar levels while providing essential nutrients.

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Strike The Spike Ii: How To Manage High Blood Glucose After Meals

Dealing With High Blood Sugar After Meals


Several years ago, I wrote an article for Diabetes Self-Management about the management of high blood glucose after meals. It was called Strike the Spike and no article Ive ever written has led to greater reader response. To this day, I still receive calls and e-mails thanking me for offering practical answers to this perplexing challenge. Ive even been asked to speak on the topic at some major conferences. So when presented with the opportunity to readdress the issue, I jumped at the chance.

A lot has changed in recent years: we know more than ever about the harmful effects of after-meal blood sugar spikes, but we also have a number of potent new tools and techniques for preventing them. And now that I know how meaningful this topic is to so many people, Ill do my absolute best to provide some answers.

How Much Does Blood Sugar Increase After Eating

At this time the blood sugar level can reach 7.8 mmol/L in a healthy individual.


After the half-hour mark, the blood glucose level starts to fall as the sugar is absorbed from the blood into the cells of the body.

Its important to check your normal blood sugar level 1 hour after eating. For example, if you find that your blood sugar is 160 mg/dL after the meal, this equates to 8.9 mmol/L which means your blood sugar is high. Its an indication that you may need to seek medical treatment to control your blood sugar level.

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Medical Approaches To Spike Control

A common approach to lowering after-meal blood glucose spikes is to take more insulin. But unless blood glucose levels remain high for three to six hours after eating, taking more insulin is not going to solve the problem. In fact, increasing mealtime insulin will most likely result in low blood glucose before the next meal.

Here are some strategies that may work better:


Risk Factors For High Blood Sugar

Glucose Rising After Waking Up? Here Is Why!

Doctors do not know exactly what causes diabetes. Some factors may increase the risk, however.

Type 1 diabetes

Researchers believe certain genetic or environmental factors may make people more likely to get type 1 diabetes.

The National Institute of Diabetes and Digestive and Kidney Diseases say certain genes play a role, and other factors such as viruses and infections may have an impact.

The Juvenile Diabetes Research Foundation say that there is nothing a person can do to prevent type 1 diabetes. Eating, exercise, or other lifestyle choices will not change the outcome.


Type 1 diabetes usually begins during childhood or early adulthood, but it can happen at any age.

Type 2 diabetes

People who have high blood sugar should discuss their target levels with their doctor.

They may need regular testing to keep these within a healthy range. Each person is different and levels can vary between individuals.

To find out their blood sugar levels, the person may need to fast for 8 hours, 2 hours after a meal, or at both times.


Some people may also take a glucose tolerance test, in which they drink a sugary liquid and have a blood test after.

The American Diabetes Association recommend a pre-meal blood sugar level of 80130 milligrams per deciliter . Around 1 to 2 hours after the beginning of a meal, blood sugar should be less than 180 ml/dL.

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Why They Happen And How To Try And Reduce Them If You Live With Type 1 Diabetes

Living with type 1 diabetes requires you to regularly check your blood sugar levels before you eat. However, we may not always consider what happens to our sugar levels immediately after we eat where it is very normal for people who dont have diabetes, let alone those who do, to temporarily have high sugar levels. Given that having high sugar levels can give you symptoms like thirst, tiredness and needing to go to the toilet a lot, learning about ways to try and reduce spikes in your sugar levels after meals may make a difference to your overall health and wellbeing.

What Is Blood Sugar

Blood sugar, also known as blood glucose, comes from the food you eat. Your body creates blood sugar by digesting some food into a sugar that circulates in your bloodstream.


Blood sugar is used for energy. The sugar that isnt needed to fuel your body right away gets stored in cells for later use.

Too much sugar in your blood can be harmful. Type 2 diabetes is a disease thats characterized by having higher levels of blood sugar than whats considered within normal limits.

Unmanaged diabetes can lead to problems with your heart, kidneys, eyes, and blood vessels.

The more you know about how eating affects blood sugar, the better you can protect yourself against diabetes. If you already have diabetes, its important to know how eating affects blood sugar.

Your body breaks down everything you eat and absorbs the food in its different parts. These parts include:

  • carbohydrates
  • fats
  • vitamins and other nutrients

The carbohydrates you consume turn into blood sugar. The more carbohydrates you eat, the higher the levels of sugar youll have released as you digest and absorb your food.

Carbohydrates in liquid form consumed by themselves are absorbed more quickly than those in solid food. So having a soda will cause a faster rise in your blood sugar levels than eating a slice of pizza.

Fiber is one component of carbohydrates that isnt converted into sugar. This is because it cant be digested. Fiber is important for health, though.

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Symptoms Treatments And Prevention

    Hyperglycemia means high glucose in the blood . Your body needs glucose to properly function. Your cells rely on glucose for energy. Hyperglycemia is a defining characteristic of diabeteswhen the blood glucose level is too high because the body isn’t properly using or doesn’t make the hormone insulin.

    Why Does Blood Sugar In Diabetes Go Up Without Eating

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    The only way that a diabetic can stay ahead of this curve is to monitor their glucose levels on a regular basis throughout the day to make sure that the sugar level doesnt sneak its way into getting into a dangerously high range. Keeping Blood Sugar Under Control. Its not enough for those with diabetes to faithfully take glucose readings …

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    Why Is It Important To Reduce The Size And Duration Of These Spikes

    Reducing these spikes may help you to increase the amount of time you spend in your target blood sugar range , which will have a positive impact on your future health. You should consult your healthcare team to understand the best target range for you, as this will differ from person to person. However, the International Society for Paediatric and Adolescent Diabetes recommends a target of 5.0-10.0 mmol/L .

    Symptoms of a high blood sugar level also vary in individuals, but they may cause you to feel thirsty, tired, stressed and need to go to the toilet a lot. In the short term, by avoiding prolonged high blood sugar readings after eating, you should also reduce the occurrence of these symptoms and improve your energy, cognitive and athletic ability and overall mood.

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