About Prediabetes

Eighty-six million Americans now have prediabetes—that’s 1 out of 3 adults! Of those 86 million, 9 out of 10 of them don’t even know they have it.

Without intervention, many people with prediabetes could develop type 2 diabetes within 5 years. With numbers like that, it’s important to learn about prediabetes and take action.

What are Prediabetes and Diabetes?

Having prediabetes means your blood glucose (sugar) levels are higher than normal—but not high enough to be diagnosed as diabetes. Prediabetes can lead to heart disease, stroke, and type 2 diabetes, the most common form of diabetes. Prediabetes can often be reversed.

With type 2 diabetes, your body cannot properly use insulin (a hormone that helps glucose get into the cells of the body). You can get type 2 diabetes at any age, but you are at higher risk if you are older, overweight, have a family history of diabetes, are not physically active, or are a woman who had gestational diabetes.

Gestational diabetes is a kind of diabetes that some women get when they are pregnant. Even if a woman’s blood sugar levels go down after her baby is born, she is at higher risk of getting type 2 diabetes later in life.

To learn more about the basics of diabetes and prediabetes, visit CDC’s Diabetes website.

Who is at Risk?

If you have these risk factors, you may be at higher risk than others for prediabetes and type 2 diabetes.

  • You are overweight.
  • You are 45 years of age or older.
  • Your parent or sibling has type 2 diabetes.
  • You are physically active fewer than 3 times per week.
  • You ever gave birth to a baby that weighed more than 9 pounds.
  • You ever had diabetes while pregnant (gestational diabetes).

Race and ethnicity also affect your risk. African Americans, Hispanic/Latino Americans, American Indians, Pacific Islanders, and some Asian Americans are at particularly high risk for type 2 diabetes.

Find out if you are at risk for prediabetes and type 2 diabetes. Take this online quiz.

If you are at risk, talk to a health care professional about getting a blood sugar test and join the CDC National Diabetes Prevention Program.