Is Body Mass Index (BMI) Reliable?
Although there is a strong correlation between body fat and the BMI calculation, there are some other considerations to take into account: For a given BMI, women usually have more body fat than men, and older adults have more than younger people. Althletes sometimes have a high BMI because of increased muscle mass. Also, waist circumference is an important measurement since abdominal fat is a risk-factor for obesity-related diseases.