About Prediabetes & Type 2 Diabetes
Over 88 million American adults have prediabetes – that’s 1 in 3 adults! Of those 88 million, more than 8 in 10 of them don’t even know they have it. Without taking action, 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.
With type 1 diabetes, your body cannot make insulin, so you need to take insulin every day. Type 1 diabetes is less common than type 2; approximately 5-10% of the people who have diabetes have type 1. Currently, no one knows how to prevent type 1 diabetes.
If you want to learn more about the basics of diabetes and prediabetes, you can visit CDC’s Diabetes website.
Read the National Diabetes Statistics Report pdf icon[PDF – 768 KB] to learn more about the toll that diabetes is taking in the United States.
Who is at Risk for Prediabetes and Type 2 Diabetes?
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.
Following are the percentage of people in the United States with diagnosed diabetes from 2010 to 2012 among people aged 20 or older, by race and ethnicity:
- American Indian/Alaska Natives – 15.9%
- Non-Hispanic blacks – 13.2%
- Hispanics – 12.8%
- Asian Americans – 9.0%
- Non-Hispanic whites – 7.6%
If you are at risk, talk to a health care professional about getting a blood sugar test.
Diabetes Has Serious Consequences
Diabetes Is Serious and Common
Diabetes is currently the seventh leading cause of death in the United States—and studies show that deaths related to diabetes may be under-reported! Today, 1 in 10 U.S. adults has diabetes, and if trends continue, 1 in 5 will have it by 2025.
An additional 88 million U.S. adults – 1 in 3 – have prediabetes, which means their blood sugar is higher than normal, but not high enough to be considered type 2 diabetes. Without intervention, many people with prediabetes could develop type 2 diabetes within 5 years, which puts them at risk of serious health problems, including:
- Heart attack
- Kidney failure
- Loss of toes, feet, or legs
Diabetes Is Costly
Type 2 diabetes affects millions of individuals and their families, workplaces, and the U.S. health care system. In 2017, the total cost of care for people with diagnosed diabetes was $327 billion, up 33% over a 5-year period. About 1 in 4 health care dollars is spent on people with diagnosed diabetes. The majority of expenses are related to hospitalizations and medications used to treat complications of diabetes.
People diagnosed with diabetes incur on average $16,750 annually in medical expenses. That’s about 2.3 times the medical expenses of a person without diabetes. The need to prevent type 2 diabetes has never been greater.
You Can Prevent Type 2 Diabetes—Get Started Today!
If you have prediabetes, a CDC-recognized lifestyle change program is one of the most effective ways to prevent getting type 2 diabetes. It can help you lose weight, become more active, and prevent or delay type 2 diabetes. To learn more, visit Why Participate?
If you’re not sure if you’re at risk, take this online test or ask your health care professional about getting a blood sugar test.
A print version of the Prediabetes Risk Test pdf icon[PDF – 263 KB] is also available.
Albright A, Gregg EW. Preventing type 2 diabetes in communities across the US: the National Diabetes Prevention Program. Am J Prev Med 2013;44(4):S346-S351. Available from http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4539613/external icon
Boyle JP, Thompson TJ, Gregg EW, Barker LE, Williamson DF. (2010). Projection of the year 2050 burden of diabetes in the US adult population: dynamic modeling of incidence, mortality, and prediabetes prevalence. Population Health Metrics. Available from http://www.pophealthmetrics.com/content/8/1/29external icon.
Centers for Disease Control and Prevention. National Diabetes Statistics Report, 2017: Estimates of Diabetes and Its Burden in the United States. Atlanta, GA: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, 2017. Available from https://www.cdc.gov/diabetes/data/statistics/statistics-report.html.
Knowler WC, Barrett-Conner E, Fowler SE, et al.; Diabetes Prevention Program Research Group. Reduction in the incidence of type 2 diabetes with lifestyle intervention or metformin. N Engl J Med 2002;346:393–403. Available from http://www.nejm.org/doi/full/10.1056/NEJMoa012512#t=articleTopexternal icon.
American Diabetes Association. Economic Costs of Diabetes in the U.S. in 2017. Diabetes Care 2018;41(5):917-928. Available from http://care.diabetesjournals.org/content/41/5/917external icon