What does BMI mean?

Generally, BMI refers to the Body Mass Index. If this index is abnormal, it is recommended to seek medical attention promptly. The detailed analysis is as follows:

The Body Mass Index (BMI) is a widely used standard for assessing body fatness or thinness and overall health. It is calculated by dividing an individual's weight (kg) by the square of their height (m), expressed as the formula: BMI = weight (kg) / height (m)². This calculation is simple and intuitive, allowing for a quick assessment of whether a person’s body size is within a healthy range, or if they are underweight or overweight. Although BMI standards may vary slightly depending on region and population, generally a normal BMI ranges between 18.5 and 24. A BMI below 18.5 is considered underweight, which may indicate a risk of malnutrition; a BMI above 24 is considered overweight or obese, potentially increasing the risk of cardiovascular diseases, diabetes, hypertension, and other conditions.

Note that BMI does not differentiate between body fat and muscle mass, nor does it account for fat distribution. Therefore, it may lead to misclassification in individuals with high muscle mass, such as athletes. As a result, BMI should be interpreted alongside other body measurements and professional medical evaluations to comprehensively assess an individual's health status.