Understanding a BMI of 25-29.9: What Does It Mean?

A body mass index (BMI) of 25.0 to 29.9 in an adult indicates overweight. BMI is a measure of body fat based on height and weight. A BMI of 25.0 to 29.9 is considered overweight, while a BMI of 30.0 or higher is considered obese. Overweight and obesity are major risk factors for a number of chronic diseases, including heart disease, stroke, type 2 diabetes, and some types of cancer.