A BMI of less than 19 indicates you are underweight. A BMI between 20 and 24 is usually considered normal. A person with a BMI of 25 to 29 is considered overweight, and a person with a BMI of 30 or above is considered obese. Obesity is associated with an increased risk for heart disease, diabetes, and other life-threatening diseases.
Body mass index (BMI), which was established in 1998 by The National Institute of Health, estimates a persons body fat and health risks. For most people, the BMI provides a more accurate estimate of a persons weight-related health risks over the standard height and weight tables or weight alone.
The BMI estimates your percentage of body fat using your height and weight. Based on this estimate, if your BMI numbers are at or above 25, you are considered unhealthy and could be at an increased risk of having higher blood fats, higher blood pressure, diabetes and risk of heart disease and stroke.
Please keep in mind that the BMI is only a guide and is not perfect. BMI does not consider individual factors such as bone or muscle mass to provide a more accurate assessment of your overall health. For example, if you are physically fit, your BMI may be high or if you have low muscle mass, BMI may underestimate your body fat. Also, if you have excess abdominal fat, BMI may inadequately evaluate your health risks.
Therefore, please use the BMI as an estimate only of your body fat and health risks. We recommend you consult with your doctor to receive a more accurate evaluation.