What does a high body mass index (BMI) typically indicate?

A high body mass index (BMI) typically indicates obesity or overweight status because BMI is a widely used screening measure that assesses body weight relative to height. It is calculated by dividing a person's weight in kilograms by the square of their height in meters.

When the BMI value increases, it reflects an increase in body fatness, which is often associated with various health risks, including conditions such as heart disease, diabetes, and certain cancers. A BMI of 25 to 29.9 indicates overweight status, while a BMI of 30 or above is classified as obesity. Therefore, identifying a high BMI is crucial for recognizing individuals at risk for these health issues, making option B the most accurate reflection of what a high BMI indicates.

The other choices reflect concepts that do not align with the implications of a high BMI. For instance, underweight status is indicated by a low BMI, while a healthy weight falls within a specific BMI range. Increased physical activity, while beneficial for overall health, is not a direct indication of high BMI but rather a potential recommendation for individuals seeking to manage their weight.