Body Mass Index (BMI) - Topic Overview
body mass index (BMI) and waist size affect your risk
type 2 diabetes,
high blood pressure,
high cholesterol, and
coronary artery disease. The following table shows the
Body mass index (BMI) and the risk for diseases 1 Classification BMI Waist size and
Men: less than 40 in. (102 cm)
Women: less than 35 in. (88 cm)
Men: 40 in. (102 cm) or
Women: 35 in. (88 cm) or more
Normal 18.5–24.9 — Increased risk Overweight 25–29.9 Increased risk High risk Obesity I 30–34.9 High risk Very high risk Obesity II 35–39.9 Very high risk Very high risk Obesity III (extreme) 40 or above Extremely high risk Extremely high risk
For Asian people, each risk category may include lower BMIs
than those listed in the table.
Under the Affordable Care Act, many health insurance plans will cover preventive care services, including obesity screening and nutrition counseling, at no cost to you.
Learn more. Health Insurance Center
A BMI under 18.5 is considered
unhealthy. There is risk that you are not getting sufficient
(malnutrition). Complications of malnutrition include anemia, nutrient
deficiency, heart irregularities, loss of menstrual periods in women
(amenorrhea), cavities, and osteoporosis.