Blood sugar that's higher than normal but not yet in the diabetes range — typically an A1c of 5.7–6.4%. It's a warning stage where intervention can prevent progression to type 2 diabetes, and weight loss is one of the most effective levers. Many people discover prediabetes during the lab work that comes with starting a weight-management program.
Related terms: A1c (HbA1c) · Type 2 diabetes · Insulin resistance