BMI (Body Mass Index) is a calculated measure of weight relative to height. It is widely used as a population-level screening tool but has known limitations: it does not distinguish between fat and muscle, does not capture where fat is distributed, and may not reflect health accurately across all ages, sexes, or ethnicities. In 2023, the American Medical Association formally recognized these limitations and recommended that BMI be used alongside other measures of health, not on its own.
