Looking for more info on prediabetes? Our Frequently Asked Questions can help you get a better understanding of what it is and how you can reverse it.

Blood Sugar

What is blood sugar?

Blood sugar is your body’s main source of energy. It comes from the food you eat.

Glucose is the main sugar found in your blood. Your blood carries glucose to all of your body’s cells to use for energy. 

Over time, having too much glucose in your blood can cause serious problems.

What is the normal range for blood sugar?

A normal level for an A1C test is below 5.7.

What is the normal level for blood sugar in a blood glucose test?

Normal levels for a fasting blood glucose test are 99 mg/dL or below.

Are there symptoms of high blood sugar?

There may not always be signs of high blood sugar. This is why you should talk to your doctor about your risk for type 2 diabetes. 

If someone’s blood sugar level is high, they may have blurry vision, feel thirsty, feel tired, and pee often. You cannot rely on symptoms to know if you have type 2 diabetes. Talk to your doctor.

What are the effects of high blood sugar?

Over time high blood sugar can cause serious health problems such as heart disease, vision loss, and kidney disease. 

If you have diabetes, your body either doesn’t make enough insulin or can’t use the insulin it makes as well as it should. 

Insulin controls the amount of glucose in your bloodstream at any given moment. 

When there isn’t enough insulin, you have high blood sugar. 

How can you lower your blood sugar?

You can lower your blood sugar (and risk for prediabetes and type 2 diabetes) by making healthy lifestyle changes. These include losing weight, eating healthier, and getting regular physical activity. The CDC-led National Diabetes Prevention Program lifestyle change program can help you make healthy changes that last.

How can I track my blood sugar?

For information on how to track blood sugar, visit the CDC’s website.

Find a National Diabetes Prevention Program Near You

Where should I start?

With early diagnosis, prediabetes can often be reversed. By joining a National Diabetes Prevention Program lifestyle change program, you’ll learn how to make simple changes to reverse prediabetes and prevent or delay type 2 diabetes. 

Find a Program