90% of People with Prediabetes Don't Know It

diabetes, diabetes control, A1C, blood pressure
People with diabetes often use a blood sugar monitoring device to help them test and control sugar levels.
(Image credit: Dreamstime.)

Although 79 million people in the U.S. have prediabetes, nearly 90 percent don't know it, according to a new report from the Centers for Disease Control and Prevention (CDC).

People with prediabetes have blood sugar levels that are abnormally high, but not high enough to be classified as diabetes. Prediabetes puts people at increased risk for developing type 2 diabetes; about 15 to 30 percent of people with prediabetes who don't take steps to reduce their risk will progress to type 2 diabetes in the following five years, the CDC says.

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Rachael Rettner
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Rachael is a Live Science contributor, and was a former channel editor and senior writer for Live Science between 2010 and 2022. She has a master's degree in journalism from New York University's Science, Health and Environmental Reporting Program. She also holds a B.S. in molecular biology and an M.S. in biology from the University of California, San Diego. Her work has appeared in Scienceline, The Washington Post and Scientific American.