Which statement about BMI is true?

Which statement about BMI is true?

• A. BMI ignores muscle mass and fat distribution and can misclassify athletic individuals.
• B. BMI directly measures body composition.
• C. BMI is an exact predictor of health.
• D. BMI accounts for age and sex in detail.

Answer: (A)

BMI is a simple screening measure that uses height and weight to estimate body size, but it does not tell you how much of the body is fat or where that fat is located. Because it doesn’t distinguish between fat and muscle, people with high muscle mass—such as athletes—can have a high BMI even if their body fat is low. This can lead to misclassification of athletic individuals as overweight or obese, which is why this statement is true. BMI does not directly measure body composition; it’s a rough indicator based on weight relative to height. It is not an exact predictor of health, since health outcomes depend on many factors beyond weight. And it doesn’t account for age and sex in detail in its basic form, though some interpretations may adjust for these factors separately.

BMI is a simple screening measure that uses height and weight to estimate body size, but it does not tell you how much of the body is fat or where that fat is located. Because it doesn’t distinguish between fat and muscle, people with high muscle mass—such as athletes—can have a high BMI even if their body fat is low. This can lead to misclassification of athletic individuals as overweight or obese, which is why this statement is true.

BMI does not directly measure body composition; it’s a rough indicator based on weight relative to height. It is not an exact predictor of health, since health outcomes depend on many factors beyond weight. And it doesn’t account for age and sex in detail in its basic form, though some interpretations may adjust for these factors separately.