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What Is The Average Blood Sugar


How Long Do Side Effects Last

What is A Normal Blood Glucose?

Side effects of glipizide are usually temporary and often go away with consistent use of the medication or when the medicine is stopped. Common side effects like headaches, nausea, and tiredness are usually short-lived and might last anywhere from a few days to a few weeks while the body gets used to glipizide.;;

Long-term, persistent side effects of glipizide are rare but can occur. For people who develop new medical conditions from taking glipizide, like aplastic anemia or cholestatic jaundice, long-term effects from these medical conditions may result.;

Symptoms Of Diabetes That May Prompt An A1c Test

As mentioned by the NIH, a doctor may recommend an A1C test if a person shows signs of poor glucose control, diabetes, or prediabetes.

Warning signs can include:


  • increased urination, especially at night
  • increased hunger
  • numbness or tingling in the hands or feet
  • slow healing sores
  • long-term use of glucocorticoids, antipsychotics, and certain medications for HIV

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.


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Fasting Plasma Glucose Test

A fasting plasma glucose test is taken after at least eight hours of fasting and is therefore usually taken in the morning.

The NICE guidelines regard a fasting plasma glucose result of 5.5 to 6.9 mmol/l as putting someone at higher risk of developing type 2 diabetes, particularly when accompanied by other risk factors for type 2 diabetes.

How Can I Treat High Blood Sugar

What Is Normal Blood Sugar?

Talk to your doctor about how to keep your blood sugar levels within your target range. Your doctor may suggest the following:

  • Be more active. Regular exercise can help keep your blood sugar levels on track. Important: dont exercise if ketones are present in your urine. This can make your blood sugar go even higher.
  • Take medicine as instructed. If your blood sugar is often high, your doctor may change how much medicine you take or when you take it.
  • Follow your diabetes meal plan. Ask your doctor or dietitian for help if youre having trouble sticking to it.
  • Check your blood sugar as directed by your doctor. Check more often if youre sick or if youre concerned about high or low blood sugar.
  • Talk to your doctor about adjusting how much insulin you take and what types of insulin to use.

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How Often Do I Need An A1c Test

This calculator only estimates how the A1C of someone who self-monitors quite frequently might correlate with their average meter readings. But many factors can affect blood glucose, so it’s critical to have your A1C checked by your doctor regularly.

The ADA recommends an A1C test at least 2 times a year for those who are in good control. For those who have changed their therapy or who are not in good control and not meeting glycemic goals, an A1C test is recommended quarterly. Your doctor will help you decide what’s right for you.1

What Blood Sugar Levels Are Healthy

Weve established what normal blood sugar looks like, more or less. But normal levels can be challenging for people with diabetes to achieve. At what point does high blood sugar get dangerous?

This is an area of some debate. The long-term studies show that the risk of complications drop off dramatically when an HbA1c is lower than 7%, which is an estimated average blood glucose of 154 mg/dL or 8.6 mmol/L. The risks continue to drop until its below 6%, an average blood sugar of 126 mg/dL or 7 mmol/L. There are many people with diabetes who strive for even lower targets, but there is not much research outlining the benefits of that approach yet.

Its important to note that studies of A1c and the rate of complications are only looking at averages. In reality, there seems to be a huge difference in the risk of complications based on genetics and perhaps other unknown factors. There are many people who have lived for many decades with type 1 diabetes, running high blood sugars almost continuously, and have no complications. There are others who have had well-controlled blood sugars that still get complications.


For most people, its safe to say that striving for an HbA1c of below 7% and probably below 6.5% is a realistic goal for staying healthy.

This chart from the American Diabetes Association lists some of the other factors that may indicate when a patient should target a lower or higher blood sugar level:

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How Often Is A1c Tested

To keep A1C levels in check, patients should have the test repeated regularly. If the A1C is less than 5.7, indicating you dont have diabetes, you should have it checked every three years, according to Robert Williams, MD, a family doctor and geriatrician in Lakewood, Colorado, and a medical advisor for eMediHealth. If it is between 5.7 and 6.4, indicating you are at risk of developing diabetes, you should have it rechecked every one to two years. If you have a confirmed diabetes diagnosis, and your blood sugar is well-controlled, you should have an A1C test every six months. If you already have diabetes and your medications change, or your blood sugar is not well-controlled, you should have an A1C test every three months.;

Your Blood Sugar Isnt Just Because Of What You Eat

What is Normal Blood Sugar? (HIGH Blood Sugar on KETO?!)

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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Prevent Type 2 Diabetes

If your test results show you have prediabetes, ask your doctor or nurse if there is a lifestyle change program offered through the CDC-led National Diabetes Prevention Program in your community. You can also search for an online or in-person program. Having prediabetes puts you at greater risk for developing type 2 diabetes, but participating in the program can lower your risk by as much as 58% .

How Can One Tell If I Have Diabetes By Examining My Blood

Your body converts sugar, also called glucose, into energy so your body can function. The sugar comes from the foods you eat and is released from storage from your bodys own tissues.

Insulin is a hormone made by the pancreas. Its job is to move glucose from the bloodstream into the cells of tissues. After you eat, the level of glucose in the blood rises sharply. The pancreas responds by releasing enough insulin to handle the increased level of glucose moving the glucose out of the blood and into cells. This helps return the blood glucose level to its former, lower level.

If a person has diabetes, two situations may cause the blood sugar to increase:

  • The pancreas does not make enough insulin
  • The insulin does not work properly

As a result of either of these situations, the blood sugar level remains high, a condition called hyperglycemia or diabetes mellitus. If left undiagnosed and untreated, the eyes, kidneys, nerves, heart, blood vessels and other organs can be damaged. Measuring your blood glucose levels allows you and your doctor to know if you have, or are at risk for, developing diabetes.


Much less commonly, the opposite can happen too. Too low a level of blood sugar, a condition called hypoglycemia, can be caused by the presence of too much insulin or by other hormone disorders or liver disease.

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Whats Considered A Normal Glucose Level

Your doctor will likely test your blood glucose levels as a screening test for diabetes during a standard yearly check-up. Additionally, many people track their glucose at home with an over-the-counter finger-prick test. When you check blood glucose , either at a doctors office or with a home finger stick glucose monitor, the results are in milligrams of glucose per deciliter of blood.

One of the most common glucose measurements is fasting plasma glucose or fasting blood glucose , and its found by checking blood glucose levels after not having any calories at least eight hours before the test. According to the American Diabetes Association , people can be classified into three categories depending on their fasting plasma glucose levels: normal, prediabetes, and diabetes. To be considered normal, fasting glucose must be under 100 mg/dl.

Of note, CGM devices measure interstitial glucose levels compared to blood/plasma glucose levels measured in the FPG tests. While interstitial glucose and blood/plasma glucose levels correlate highly, they are not precisely the same, and diagnoses are not made from interstitial measurements.


Below is a summary overview of data about 24-hour glucose trends in nondiabetic individuals wearing CGM to gain a better understanding of whats normal.

Who Should Monitor Blood Sugar Levels

Normal Blood Sugar Levels

If you have type 1 or type 2 diabetes, monitoring your blood sugar regularly will help you understand how medication like insulin, food, and physical activity affect your blood glucose. It also allows you to catch rising blood sugar levels early. It is the most important thing you can do to prevent complications from diabetes such as heart attack, stroke, kidney disease, blindness, and amputation.;

Other people who may benefit from checking their blood glucose regularly include those:

  • Taking insulin

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Fasting And Premeal Blood Glucose Levels

The amount of glucose in the blood varies, depending on when you last ate. A fasting blood glucose level after at least 8 hours without caloric intake in a healthy, nondiabetic adult typically ranges from 70 to 99 mg/dL, according to the American Diabetes Association . People with a fasting blood glucose of 100 to 125 mg/dL are considered prediabetic, meaning the body’s handling of glucose is impaired but not yet to the point of warranting a diagnosis of diabetes.


A fasting blood glucose of 126 mg/dL or greater typically indicates diabetes, according to ADA criteria. Among people diagnosed with diabetes who are not pregnant, the ADA recommends a target fasting or premeal blood sugar level of 80 to 130 mg/dL.

Know Your Blood Sugar

Blood sugar is the amount of sugar in your blood at a given time. It’s important to check your blood sugar level, because it will:

  • determine if you have a high or low blood sugar level at a given time
  • show you how your lifestyle and medication affect your blood sugar levels
  • help you and your diabetes health-care team make lifestyle and medication changes to improve your blood sugar levels

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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.;;;

Levels In The Morning

Average Blood Glucose Levels

The best time to check blood sugar levels in the morning is right when you wake up and before you eat anything. This gives you a glimpse of what may be happening overnight, and it gives you a baseline for the day.

These are goal levels, according to;The Joslin Diabetes Center:

  • Under 70 mg/dl if you do not have diabetes.
  • 70 to 130 mg/dl if you have diabetes.

The dawn effect can often lead to a high morning measurement in diabetes. This is your bodys tendency to get ready for the day by raising blood sugar by increasing levels of counter-regulatory hormones the ones that counteract insulin as in normal blood sugar. For people with diabetes, you do not have the capacity to counterbalance this rise in blood sugar, so levels can be dangerously high.

Ways to lower your morning blood sugar value include:


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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.

How To Reduce Blood Sugar

You can take steps to reach your blood sugar goals as soon as you find out that it is high. This is how to reduce blood sugar if you have a single high reading that may be dangerous:

  • Ask your doctor what to do if you missed a dose of insulin or another diabetes medication
  • Ask your doctor if your medication types and doses are still appropriate for you
  • Drink water to dilute the sugar
  • Exercise for 15 minutes
  • Eat a small protein snack, such as a hard-boiled egg, ½ ounce of peanuts or pistachios or other nuts, ½ cup of beans, or ½ cup of plain yogurt or cottage cheese

If you have chronically high blood sugar in prediabetes or diabetes, you can follow this treatment plan:

  • Exercise regularly, assuming your doctor approves it
  • Lose weight if you are overweight or obese
  • Eat a higher proportion of vegetables, whole grains, lean proteins, healthy fats, and fruit
  • Limit sugary foods and beverages, fried foods, refined starches, and processed and fatty red meats
  • Beware of starchy vegetables such as sweet potatoes, which can spike your blood sugar. Check out our guide of which veggies to avoid!

Also Check: How To Manage Type 1 Diabetes


Glipizide Contraindications & Warnings

Glipizide is a great medication for treating Type 2 diabetes, but it isnt right for everyone. Here are some contraindications and warnings about glipizide to be aware of:

  • Abuse and dependence: Glipizide isnt a habit-forming drug, but it is important to talk with your healthcare provider about any concerns you may have while taking it.
  • Overdose: The maximum daily dose of glipizide for adults is 40 mg for regular tablets and 20 mg for extended-release tablets. That dose may be lower for people with certain health conditions. Overdosing on glipizide can potentially cause life-threatening hypoglycemia and symptoms like seizures, tremors, confusion, and blurred vision. The maximum daily dose of glipizide shouldnt be exceeded unless approved by a medical professional. If you or someone you know has overdosed on glipizide, seek emergency medical attention or call the Poison Help line at 1-800-222-1222.;
  • Restrictions: The risks and benefits of glipizide while pregnant or breastfeeding should be discussed with your doctor. Glipizide shouldnt be taken by pregnant women who are near-term. It also shouldnt be taken by people who have an allergy to the medication or diabetic ketoacidosis. It should be used with caution in people who have:;
  • A G6PD deficiency
  • Are allergic to sulfonamide medications

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