BMI (Body Mass Index)

Body Mass Index (BMI) is a widely used screening tool that provides a simple numerical measure of a person’s body size based on their weight in relation to their height. People are classified as underweight, normal weight, overweight, or obese based on their BMI, which is determined by dividing their weight in kilograms by the square of their height in meters. Although BMI provides a rapid and low-cost way to evaluate possible weight-related health concerns at the population level, it is limited since it does not differentiate between bone, muscle, and fat mass, nor does it take into consideration variables such as age, sex, ethnicity, or body fat distribution.