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How Long To Wait After Eating To Check Blood Sugar


What Are The Target Ranges

Blood under the microscope after eating sugar. My test

Blood glucose targets are individualized based on:

  • duration of diabetes
  • conditions a person may have
  • cardiovascular disease or diabetes complications
  • hypoglycemia unawareness
  • individual patient considerations

The American Diabetes Association suggests the following targets for most nonpregnant adults with diabetes. A1C targets differ based on age and health. Also, more or less stringent glycemic goals may be appropriate for each individual.

  • A1C: Less than 7%A1C may also be reported as eAG: Less than 154 mg/dL
  • Before a meal : 80130 mg/dL
  • 1-2 hours after beginning of the meal *: Less than 180 mg/dL

Recommended Blood Sugar Targets For Most People With Diabetes*

Your targets may not be the same as the examples in this chart. Your targets are important and should be specific to you.

A1C**
4.0 to 7.05.0 to 10.0

* This information is based on the Diabetes Canada 2018 Clinical Practice Guidelines for the Prevention and Management of Diabetes in Canada and is a guide.** A1C is a measurement of your average blood sugar control for the last two to three months and approximately 50 per cent of the value comes from the last 30 days.


Personalizing Your Diet Based On Blood Sugar Response

In addition to seeing your healthcare provider, there are steps you can take to reduce your blood sugar levels. If you check your blood sugar after meals and keep track of those measurements, along with the types and amounts of food you ate, you may be able to see which foods are problematic.

Although an increase in blood sugar is usually due to eating high-carb foods, all carbs are not the same when it comes to raising blood sugar. Because starchy foods digest down to glucose very quickly, some starchy foods may end up having a much greater impact on blood sugar than you might expect.

For instance, even though a banana tastes sweeter than a baked potato, the potato may actually have a bigger impact on blood sugar.13

Because high-carb foods have the biggest impact on blood sugar levels, it makes sense to reduce them, no matter what type of diet you follow. The American Diabetes made this point in a 2019 paper on nutrition for people with diabetes.14

Sometimes making gradual changes can work best. Our guide, Eating better: six steps down carb mountain, can help you lower your carb intake, one step at a time.


If youve been diagnosed with type 1 or type 2 diabetes, our guide to the best foods for diabetes can help you make choices that may reduce your need for blood sugar control medications.

If a food or beverage seems to be causing your blood sugar to rise too much, try leaving it out of your diet for a few days to see if you notice a difference.

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What Is The Normal Blood Sugar Level

Blood sugar level means the amount of glucose dissolved in the blood at any given time. It is an important indicator which shows the bodys overall metabolic condition. The normal range of blood sugar is from 3.5 mmol/L to 6.1 mmol/L during fasting and less than 7 mmol/L after having a meal.

If your blood sugar is higher than the normal range, it could be a sign of Diabetes Mellitus. Diabetes is the name of the condition where the body cannot properly process and absorb the glucose taken during eating, causing it to remain in the bloodstream. This can lead to many serious complications like nerve damage and loss of vision.


Fat Fiber And Mixed Meals

Postprandial Blood Glucose

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.

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What Are Normal Blood Glucose Levels In Healthy Individuals

Blood sugar levels can either be normal, high, or low, depending on how much glucose someone has in their bloodstream. Glucose is a simple sugar thats present in the bloodstream at all times. Normal blood glucose levels can be measured when someone fasts, eats, or after theyve eaten. A normal blood glucose level for adults, without diabetes, who havent eaten for at least eight hours is less than 100 mg/dL. A normal blood glucose level for adults, without diabetes, two hours after eating is 90 to 110 mg/dL.

Many factors affect blood sugar levels throughout the day:

  • Type of food consumed, how much, and when
  • Physical activity
  • Menstrual periods
  • Alcohol

An ideal blood sugar level for anyone without diabetes or prediabetes, regardless of age, in the morning should be less than 100 mg/dL. Remember, blood sugar levels can fluctuate throughout the day as a result of the factors previously mentioned.


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Read Also: How Many Carbs Should A Diabetic Have In One Day

What Causes Low Blood Sugar

Low blood sugar has many causes, including missing a meal, taking too much insulin, taking other diabetes medicines, exercising more than normal, and drinking alcohol. Blood sugar below 70 mg/dL is considered low.

Signs of low blood sugar are different for everyone. Common symptoms include:


  • Shaking.
  • Dizziness.
  • Hunger.

Know what your individual symptoms are so you can catch low blood sugar early and treat it. If you think you may have low blood sugar, check it even if you dont have symptoms. Low blood sugar can be dangerous and should be treated as soon as possible.

Can I Eat And Drink Before Having A Blood Test

When should you test your Blood Sugar

It depends on the type of blood test you’re having. The healthcare professional arranging your test will tell you if you need to do anything to prepare for it. You can eat and drink as normal before some blood tests. But if you’re having a “fasting blood test”, you will be told not to eat or drink anything beforehand. You may also be told not to smoke before your test. Common fasting blood tests Examples of blood tests that require you to fast include: a fasting blood glucose test you fast for 8 to 10 hours before the test an iron blood test you fast for 12 hours before the test For more information about a wider range of blood tests, go to Lab Tests Online. Further information:Continue reading > >

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What Should I Do If My Blood Sugar Gets Too Low

Low blood sugar is also called hypoglycemia . It means your blood sugar level drops below 70. Having low blood sugar is dangerous and needs to be treated right away. Anyone with diabetes can have low blood sugar. You have a greater chance of having low blood sugar if you take insulin or certain pills for diabetes.

Carry supplies for treating low blood sugar with you. If you feel shaky, sweaty, or very hungry, check your blood sugar. Even if you feel none of these things, but think you may have low blood sugar, check it.


If your meter shows that your blood sugar is lower than 70, do one of the following things right away:

  • chew 4 glucose tablets
  • drink 4 ounces of fruit juice
  • drink 4 ounces of regular soda, not diet soda or
  • chew 4 pieces of hard candy

After taking one of these treatments, wait for 15 minutes, then check your blood sugar again. Repeat these steps until your blood sugar is 70 or above. After your blood sugar gets back up to 70 or more, eat a snack if your next meal is 1 hour or more away.

If you often have low blood sugar, check your blood sugar before driving and treat it if it is low.

How Do I Check Blood Sugar Level

Checking blood sugar level is very simple thanks to the availability of easy-to-use handheld glucometers. These consumer glucometers have made it very easy to always keep an eye on your blood sugar level. They are an absolute essential for diabetics and also for people trying to maintain their blood glucose level.

They operate by taking pin-pricks of blood onto a small electrode slip, which when inserted into the device gives a digital readout of the amount of glucose content in the blood. These devices have become extremely popular for their convenience, reliability and accuracy.


An essential laboratory test of blood glucose level is the Oral Glucose Tolerance Test or OGTT. It is a diagnostic test for DM or any glucose intolerance. Here, a blood sugar reading is taken after a 10-12 hour fast. Then another reading is taken after 2 hours after ingesting a measured amount of glucose. This test shows the bodys ability to absorb glucose, thus is a confirmatory test for DM.

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Normal Blood Sugar 30 Minutes After Eating

Blood sugar is a very familiar term these days. With a huge amount of individuals suffering from diabetes, trying to maintain a healthy level of sugar in the blood has become one of the daily challenges many of us face. As a matter of fact, checking the normal blood sugar 30 minutes after eating is a key indicator for getting an idea of the state of diabetes and overall health.

In this article, well go over the normal blood sugar, how to check it, what is the normal blood sugar after meals and how to control it.

Table of Content


  • 10 Bottom Line:
  • How To Lose Weight By Checking Blood Sugar

    What Is Normal Blood Sugar After Eating For A Diabetes ...

    Checking blood sugar constantly can be something odd if you arent diabetic. However, it keeps you alert to the extreme rises and sharp drops in blood sugar which are called blood sugar spikes. In fact, sugar spikes are followed by insulin spikes which leave you hungry and craving for more sweets that in turn makes you gain weight easily. So to lose weight you have to keep it ideal by focusing on what you eat and other factors.

    Read Also: How Many Points Does Metformin Lower Blood Sugar

    What You Can Drink With Meals

    Add a low-calorie, low-sugar drink or choose water. Proper hydration is essential to helping your body remove excess sugar.

    Some drinks that are good for keeping your blood sugar level low include:

    • Unsweetened tea
    • Unsweetened coffee
    • Sparkling water or club soda
    • Flavored water or sparkling water without added sugar
    • Diet soda or other diet drinks

    What Should I Do If My Blood Sugar Gets Too High

    High blood sugar is also called hyperglycemia . It means that your blood sugar level is higher than your target level or over 180. Having high blood sugar levels over time can lead to long-term, serious health problems.


    If you feel very tired, thirsty, have blurry vision, or need to pee more often, your blood sugar may be high.

    Check your blood sugar and see if it is above your target level or over 180. If it is too high, one way to lower it is to drink a large glass of water and exercise by taking a brisk walk. Call your health care team if your blood sugar is high more than 3 times in 2 weeks and you dont know why.

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    Why Should You Test Your Blood Sugar

    When you have diabetes, your blood sugar levels dont always stay in an optimal range. Testing your blood sugar helps you understand how food, activity, and medicine affect your blood glucose, according to the American Diabetes Association. They suggest keeping a log, noting the date, time, and blood glucose level. You might also want to notate what you were doing or eating prior to testing your glucose levels.

    What Is Low Blood Glucose

    Clearing Up Myths About Blood Sugars After Eating

    Low blood glucose, also called low blood sugar or hypoglycemia, occurs when the level of glucose in your blood drops below what is healthy for you. For many people with diabetes, this means a blood glucose reading lower than 70 milligrams per deciliter .1 Your number might be different, so check with your doctor or health care team to find out what blood glucose level is low for you.


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    When You Wake Up

    Some people experience high blood sugar levels in the morning. This is sometimes called the Dawn phenomenon and is a result of body changes that occur during sleep, according to the Cleveland Clinic. Testing your blood sugar when you wake up, including waking from a nap, will help you understand your bodys reaction and determine whether your insulin schedule or dosage needs to be adjusted.

    When Should I Check My Blood Sugar

    How often you check your blood sugar depends on the type of diabetes you have and if you take any diabetes medicines.

    Typical times to check your blood sugar include:

    • When you first wake up, before you eat or drink anything.
    • Before a meal.
    • Two hours after a meal.
    • At bedtime.

    If you have type 1 diabetes, have type 2 diabetes and take insulin, or often have low blood sugar, your doctor may want you to check your blood sugar more often, such as before and after youre physically active.


    Recommended Reading: Type 2 Diabetes Weight Loss Symptom

    What Is A Normal Blood Sugar Level Immediately After Eating

    What Are Normal Blood Sugar Levels? Theyre less than 100 mg/dL after not eating for at least 8 hours. And theyre less than 140 mg/dL 2 hours after eating. During the day, levels tend to be at their lowest just before meals.

    What Are Clinical Trials For Low Blood Glucose

    My Blood Sugar Numbers Dumbfound Me. Part 1

    Clinical trialsand other types of clinical studiesare part of medical research and involve people like you. When you volunteer to take part in a clinical study, you help doctors and researchers learn more about disease and improve health care for people in the future.

    Researchers are studying many aspects of low blood glucose levels in diabetes, such as

    • how to diagnose and treat low blood glucose among people with diabetes
    • medicines that can treat symptoms of low blood glucose in people with hypoglycemia unawareness
    • educational approaches to reduce fear of low blood glucose, which can make it harder for you to control your diabetes

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    How Soon After Ingestion Of Food Does Blood Sugar Rise

    Related Articles

    After eating, your blood sugar levels begin to rise within 15 to 30 minutes, but only if your meal or snack includes carbohydrates. The speed and level of the increase depend on the type of carbohydrates and other nutrients found in the foods you eat, as well as on your body’s ability to manage your blood sugar levels.

    How Can I Pay For Tests And Diabetes Supplies

    Medicareexternal icon, Medicaid, and most private insurance plans pay for the A1C test and fasting blood sugar test as well as some diabetes supplies. Check your plan or ask your health care team for help finding low-cost or free supplies, and see How to Save Money on Diabetes Care for more resources.

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    How Food Affects Blood Sugar

    When you eat food, your body breaks it down into essential parts:

    • Carbohydrates
    • Fats
    • Vitamins and minerals

    All parts are necessary in a healthy diet, but the three types of carbohydrates are particularly important when it comes to your blood glucose level. While the general rule is that the more carbohydrates you eat, the higher your blood sugar level, not all three types of carbohydrates convert to blood sugar at the same rate.

    The foods that fit into each carb category include:

    • Starches, or complex carbohydrates: Starchy vegetables, dried beans, and grains
    • Sugars: Fruits, baked goods, beverages, and processed food items like cereals or granola bars
    • Fiber: Whole wheat products, chickpeas, lentils, berries, pears, and brussels sprouts

    The glycemic index helps you find out which foods can increase or help decrease blood sugar levels. Based on a scale ranging from 0 to 100, high-indexed foods are rapidly digested, absorbed, and metabolized, resulting in marked fluctuations in blood sugar levels, while low-indexed foods produce smaller fluctuations in your blood glucose.

    The American Diabetes Association advises adding lean sources of protein and heart-healthy fats to help reduce the overall glycemic impact of a meal or snack.

    During Blood Sugar Testing

    Blood Sugar Levels Chart | Includes fasting and after eating

    Everybody is different and the speed at which your blood sugar levels rise after eating depends on whether you are healthy, if you have diabetes or insulin resistance or if you exercise after your meal. If you are concerned with your blood sugar levels, ask your doctor for a prescription to get a glucometer to check your own blood sugar levels at home. Measure your blood sugars before eating and every 15 minutes to two hours after a meal to learn how your body responds to different foods.

    References

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