- Body mass index (BMI) is the measure of body fat based on height and weight that applies to adult men and women. BMI is a screening tool but is not diagnostic of the body fatness or health of an individual.
- Your age does not factor into the equation unless you are a child or teen.
- Your BMI does not take into account the type of weight you carry. If are extremely athletic and muscular you will have a BMI number in the overweight range though you are not overweight, as muscle weighs more, but is far healthier than fat.
- The younger and fitter you are, the more likely a high BMI is due to high muscularity.