Prediabetes means your blood glucose (blood sugar) levels are higher than normal but not high enough to be diagnosed as diabetes. Because most people with prediabetes have no symptoms, many don’t realize they’re at risk. Without intervention, prediabetes can lead to type 2 diabetes, heart disease, and stroke.
A simple blood test—often an A1C test—can determine whether your glucose levels are elevated. Adults age 45 or older, especially those who are overweight, are encouraged to get screened.
The good news is that prediabetes can often be reversed. Losing 5–10% of your starting weight, being physically active for at least 30 minutes a day, and making healthy food choices can significantly reduce your risk. In some cases, your doctor may prescribe medication to help manage blood glucose levels.
NIH: National Institute of Diabetes and Digestive and Kidney Diseases