Body Mass Index (BMI) is a simple calculation used to estimate body fat based on height and weight. It is a widely used measure of obesity and is used to track weight loss and gain.
BMI is an important tool for healthcare professionals, as it can be used to screen for obesity and related health conditions such as heart disease, stroke, type 2 diabetes, and some types of cancer. BMI was developed in the 19th century by Belgian statistician Adolphe Quetelet.