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High Blood Glucose When Fasting

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What Is A Normal Blood Sugar Level

Fasting and Blood Glucose | Jason Fung

The answer to the question what is a normal blood sugar level is as follows:

Fasting normal blood sugarNormal for person without diabetes: 7099 mg/dl Official ADA recommendation for someone with diabetes: 80130 mg/dl

Normal blood sugar 2 hours after mealsNormal for person without diabetes: Less than 140 mg/dl Official ADA recommendation for someone with diabetes: Less than 180 mg/dl

Normal for person without diabetes: Less than 5.7%Official ADA recommendation for someone with diabetes: Less than 7.0%

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When To See A Doctor

According to the University of Michigan, blood sugar levels of 300 mg/dL or more can be dangerous. They recommend calling a doctor if you have two readings in a row of 300 or more.

See your doctor if you have consistently high blood sugar levels. Symptoms of this include:

  • increased thirst
  • high levels of sugar in urine

Ask your doctor how often to check your blood sugar and about your ideal blood sugar levels.

If you dont currently see a doctor who specializes in diabetes, known as an endocrinologist, you can find one by searching the American Association of Clinical Endocrinologists website.

You can find a certified diabetes educator by visiting the American Diabetes Associations website and searching by zip code.

Summary

Talk to your doctor if you have consistently high blood sugar readings or symptoms of chronic hyperglycemia.

Checking your blood sugar and then treating hyperglycemia early will help prevent any complications.

Health problems can arise when someone has high blood sugar regularly and without treatment.

Examples of complications include:

  • nerve damage, called diabetic neuropathy, that may affect sensations in the feet and hands
  • diabetic retinopathy, or damage to the blood vessels in the eyes that affects vision
  • increased risks for kidney problems
  • increased risks for heart problems

Taking steps to keep your blood sugar at target levels can help to minimize the likelihood that these complications will occur.

Maintain A Healthy Weight

It is relatively more challenging for the body to use insulin and manage blood sugar levels with overweight or obesity. The body fails to actively respond to insulin due to extra weight in the body. It results in increased high fasting blood glucose levels and an increased risk of type 2 diabetes. Insulin insensitivity leads to weight gain, leading to poor insulin sensitivity, creating a loop.

Although the exact mechanisms are unknown, research links fat to insulin resistance and the growth of type 2 diabetes. Therefore, maintaining a healthy weight can help reduce the risk of high fasting blood glucose levels and even reduce the risk of type 2 diabetes.

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Normal Fasting Blood Sugar For Person Without Diabetes

A normal fasting blood glucose for someone who does not have diabetes ranges from 70 to 99 mg/dl. The American Diabetes Association recommends a routine screening for type 2 diabetes starting at age 35. If the results are normal, the screening should be repeated every three years.

If have diabetes risk factors, which include being overweight or obese, having a family history of type 2 diabetes, having a history of gestational diabetes, or being of a certain race/ethnicity , you should be screened for diabetes sooner and repeat testing may be recommended more often.

Children and adolescents who have diabetes symptoms or who are overweight and have a family history of type 2 diabetes, are of African American, Latino, Asian American, Native American or Pacific Islander descent, who have signs of prediabetes or a mother who had gestational diabetes should be tested beginning at age 10 or the onset of puberty and then every three years thereafter.

A fasting blood sugar of 100 to 125 mg/dl is indicative of prediabetes, which is a condition where blood sugar levels are above normal but not high enough to be considered diabetes. Prediabetes is a risk factor for type 2 diabetes, heart disease and stroke. Its managed by lifestyle changes and, in some cases, medication.

What Is The Dawn Phenomenon

Morning Fasting Glucose Range

Your body uses glucose for energy and it is important to have enough extra energy to be able to wake up in the morning. So for a period of time in the early morning hours, usually between 3 a.m. and 8 a.m., your body starts churning out stored glucose to prepare for the upcoming day.

At the same time, your body releases hormones that reduce your sensitivity to insulin. In addition, these events may be happening while your diabetes medication doses taken the day before are wearing off.

These events cause your body’s blood sugar levels to rise in the morning .

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What Is Normal Fasting Blood Sugar And What Is A Diabetes Blood Sugar Level

The results of the fasting blood sugar test will come back as a number:

  • 99 mg/dL or lower: This is a normal fasting blood sugar level.
  • 100125 mg/dL: Fasting blood sugar in this range typically indicates prediabetes. This means your blood sugar levels are higher than normal but not high enough to be classified as diabetes.
  • 126 mg/dL or above: This indicates high blood sugar, the main sign of diabetes.

If you have a high fasting blood sugar level, your healthcare provider may repeat the test to make sure. If the test reveals that you have prediabetes, your healthcare provider will recommend you repeat the fasting blood sugar test every year or two. The results will help you know whether you are progressing to Type 2 diabetes.

A Warning Of Developing Type 2 Diabetes

Impaired fasting glycaemia is sometimes called pre-diabetes. This is when blood glucose levels in the body are raised, but are not high enough to mean that the person has diabetes. IFG means that the body isnt able to use glucose as efficiently as it should. This is because a layer of fat around the cells of the body, prevents insulin doing its job and taking the glucose into the cells of the body where its needed for energy. This situation is reversible by losing weight and hence the fat around the cells disappears. If you dont lose weight however, is it unlikely that you wont eventually develop Type 2 Diabetes.

IFG has no symptoms and can often go undiagnosed for years. Although there are no symptoms, many people diagnosed with IFG are overweight. Nine out of 10 people with IFG have high blood pressure, raised cholesterol levels or a family history of the condition.

IFG can lead to the development of type 2 diabetes. People with IFG are five to 15 times more likely to develop type 2 diabetes than people with normal glucose levels. However, this isnt inevitable. You can take steps to reduce the chances of this happening. People with IFG also have a slightly increased risk of heart disease and stroke.

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Official Fasting Blood Sugar Ada Recommendation For Someone With Diabetes

The American Diabetes Association recommends a fasting blood sugar target of 80 to 130 mg/dl for most nonpregnant adults with diabetes. However, the fasting blood sugar target may need to be individualized for certain people based on such factors as duration of diabetes, age and life expectancy, cognitive status, other health conditions, cardiovascular complications, and hypoglycemia unawareness. Its important that people with diabetes discuss their target blood sugar goals with their health care provider.

The Best Foods To Eat To Help Avoid Or Lower Your High Blood Sugar

Dawn Phenomenon: High Fasting Blood Sugar Levels On Keto & IF

While theres no such thing as a hyperglycemia diet per se, your eating choices still play an important role in regulating your blood sugar levels.

First, know you cant just cut all carbs or avoid foods with sugar to prevent blood sugar spikes. After all, healthy foods such as fruits and veggies also contain carbs and sugar. The value of carbs differs according to their complexity, and sugar in food is different from blood sugar.

  • White bread, pasta, and rice
  • Packaged and processed snacks, such as chips, pretzels, cookies, and candy
  • Foods high in saturated fat, such as hot dogs, bacon, and sausage
  • Foods high in trans fats, like margarine and certain packaged baked goods
  • Foods that can raise your cholesterol, like liver, red meat, and full-fat dairy

Tracking your carb intake, especially if you have diabetes, is also critical for avoiding blood sugar spikes.

Diabetes Spectrum

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History Of Diabetes And Intermittent Fasting

Fasting has been around for a long time. It’s been a historical part of some spiritual traditions stretching back centuries. More recently, IF has been used as part of a healthy diet for weight loss, as a “detoxifying” strategy, and more.

There’s been some debate about whether fasting is healthy for those with diabetes. A growing body of evidence suggests that some IF diets could benefit people with diabetes. Scientists note that when a person fasts may be just as important as the diet itself.

Type Ii Diabetes Mellitus Medications

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Is There Anything Else I Should Know About A Blood Glucose Test

If you have diabetes, you may need to do blood sugar testing at home every day to help manage your blood glucose levels. There are two ways to do this:

  • Blood glucose meters require you to prick your finger with a small device called a lancet. You apply a drop of blood to a test strip and insert it into a small, electronic glucose meter, which measures the glucose is in your blood.
  • Continuous glucose monitors use a tiny sensor that you insert under your skin. Every few minutes, the sensor measures glucose levels in fluids between your cells. If your glucose is too high or too low, you use a blood glucose meter to check your blood levels before making changes to raise or lower your glucose level.

Benefits Of Intermittent Fasting

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A few small studies have shown that intermittent fasting can have health benefits for people with diabetes.

The benefits include:

  • Daytime sleepiness
  • Low energy levels that may impact your ability to exercise, which is important for people with diabetes
  • A much higher risk of low blood sugar
  • High blood sugar which can happen if the liver responds to fasting by releasing stored glucose

More research is needed to understand how common and how severe these side effects could be.

Some side effects, like hyperglycemia or hypoglycemia, could be dangerous for people with diabetes. Talk to your healthcare provider before you start any type of IF diet.

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Hashimotos Fasting And Keto

I believe there is a way to reverse Hash! I feel so much better on keto and IF than any treatment over the past three years. Have you had any patients reversing Hashi with this program?

Thank you so much for all your work for all of us,Martha

Answer: I dont see Hashimotos very frequently so dont have much experience. Fasting and low carb diets usually drop insulin so are effective for diseases of excessive insulin such as obesity, type 2 diabetes and PCOS. However, it may also have a smaller effect on inflammation so it may certainly benefit Hashimotos as well, but there are no studies to prove this, and I have only limited clinical experience with Hashimotos.

Dr. Jason Fung

  • Women’s questions introduction 01:36 In this video series, you can find expert views on some of your top questions about low-carb and women’s health.
  • Is low carb bad for gut bacteria? 02:14 Can a low-carb diet be potentially harmful to your gut microbiome?
  • Is saturated fat bad? 07:29 Low carb is great. But could the saturated fat clog your arteries and kill you? Top low-carb doctors answer this question.

What Are The Symptoms Of Hyperglycemia

Its especially important to know the early signs of hyperglycemia if you have type 1 diabetes. If hyperglycemia is left untreated in people with type 1 diabetes, it can develop into ketoacidosis, where ketones, which are toxic acids, build up in the blood. This condition is an emergency situation that can lead to coma or death.

Early symptoms of hyperglycemia include:

  • High blood sugar.
  • Unusual fruity smell on the breath.
  • Deep labored breathing or hyperventilation.
  • Rapid heartbeat.

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What Do The Test Results Mean

  • If your fasting blood glucose level is between 3.6mmol/l and 6mmol/l, this means that your blood glucose level is normal.
  • If your fasting blood glucose level is 7mmol/l or higher, this is likely to mean that you have diabetes. Diabetes is a long-term condition where the body is not able to control the amount of glucose in the blood.
  • If your fasting blood glucose level is between 6.1mmol/l and 6.9mmols/l, you may have IFG.

How Do I Check My Blood Glucose

High Fasting Blood Glucose on Low Carb/Keto Diet – Q4 – QA17 – Ep. 424
  • Wash your hands.
  • Put the lancet in the lancet device.
  • Put the test strip into the blood glucose meter.
  • Stick the finger on its side near the top of the finger .
  • Squeeze the finger so a drop of blood comes up on the skin.
  • Touch the blood sample to the test strip.
  • Read the blood glucose number on meter.
  • Picture 1: Poke the side of the finger with the lancet

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    Sugar Release From The Liver

    Usually, our liver releases a few grams of sugar, depending on body weight, per hour, into our blood to stabilize the blood sugar when were not eating. Insulin is normally released when the blood glucose values are high to suppress the release of sugar as it wouldnt actually be needed if the blood sugar is already high. Since people with Type 2 Diabetes often have insulin resistance, which means that the insulin can no longer work properly, the liver releases much more sugar into the blood than needed. All this sugar would then have to be transported to the muscle cells and consumed with the help of insulin. As these cells dont have a high need for sugar, particularly in the night while sleeping, its accumulated in the blood and this results in high blood sugar values in the morning.

    Additionally, various hormones play a trick on us. Theyre the opponents to the hormone insulin and to really get you going in the morning, these hormones are produced in the second half of the night.

    Thats why we need more insulin to transport the sugar into the cells in the early morning hours than for example at noon. Therefore, a breakfast with less fast carbs and a little bit more protein can help reduce the increase of blood sugar values. The beloved white wheat roll with strawberry jam is therefore, rather, something better off saved for special days. ?

    Can You Fast If You Have Diabetes

    Yes in some circumstances, but it depends on how healthy you are.

    Ultimately, it is a personal choice whether or not to fast. However, if you do choose to fast, then you must consult your doctor or healthcare team, to make sure that you are able to look after yourself properly. We’ve got lots more information about fasting and how to do it safely.

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    What Causes Hyperglycemia

    A number of things can cause hyperglycemia:

    • If you have type 1, you may not have given yourself enough insulin.
    • If you have type 2, your body may have enough insulin, but it is not as effective as it should be.
    • You ate more than planned or exercised less than planned.
    • You have stress from an illness, such as a cold or flu.
    • You have other stress, such as family conflicts or school or dating problems.
    • You may have experienced the dawn phenomenon .

    Why The Test Is Performed

    Diabetes Fact: how quickly can exercise lower blood sugar

    Your doctor may order this test if you have signs of diabetes . More than likely, the doctor will order a fasting blood sugar test.

    The blood glucose test is also used to monitor people who already have diabetes.

    The test may also be done if you have:

    • An increase in how often you need to urinate
    • Recently gained a lot of weight

    SCREENING FOR DIABETES

    This test may also be used to screen a person for diabetes.

    High blood sugar and diabetes may not cause symptoms in the early stages. A fasting blood sugar test is almost always done to screen for diabetes.

    If you are over age 45, you should be tested every 3 years.

    If you’re overweight and have any of the risk factors below, ask your health care provider about getting tested at an earlier age and more often:

    • High blood sugar level on a previous test
    • Blood pressure of 140/90 mm Hg or higher, or unhealthy cholesterol levels
    • History of heart disease
    • Member of a high-risk ethnic group
    • Woman who has been diagnosed with gestational diabetes
    • Polycystic ovary disease
    • Close relative with diabetes
    • Not physically active

    Children age 10 and older who are overweight and have at least two of the risk factors listed above should be tested for type 2 diabetes every 3 years, even if they have no symptoms.

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