What is BMI and how is it calculated?
Body Mass Index (BMI) is a simple numerical value calculated from a person's height and weight. It is widely used as a screening tool to identify weight categories that may lead to health problems. The formula is: BMI = weight (kg) / height (m)².
BMI categories are defined by the World Health Organization (WHO): Underweight is below 18.5, Normal weight is 18.5–24.9, Overweight is 25–29.9, and Obese is 30 or above. These ranges apply to most adults aged 18–65.
BMI is a useful screening tool but does not directly measure body fat or overall health. Factors such as muscle mass, age, sex, and ethnicity can affect the interpretation. Always consult a healthcare professional for a comprehensive health assessment.