Body mass index (BMI) is a measure of body fat based on height and weight. It is used to screen for weight-related health problems such as obesity, underweight, and eating disorders. BMI can be calculated using a simple formula: weight in kilograms divided by the square of height in meters (kg/m^2).
BMI is an important tool for healthcare providers because it can help them assess a patient’s risk for weight-related health problems. It is also used to track weight loss or gain over time. BMI was first developed in the early 19th century by Adolphe Quetelet, a Belgian mathematician and astronomer.