Body mass index, or BMI, is one of the most familiar numbers in weight and health screening. It is easy to calculate, requires no specialized equipment, and is widely used in healthcare and public health. But how much can BMI actually tell you about your health? BMI is useful as a screening tool, particularly at a population level. It becomes less informative when it is treated as a direct measurement of body fat or as a complete assessment of an individual’s health. The CDC