Which BMI range defines normal weight?

• A. 18.0–24.0
• B. 0.0–18.4
• C. 30.0–39.9
• D. 18.5–24.9

Answer: (D)

BMI categories group weight status to identify where a person falls in terms of health risk. BMI is calculated as weight in kilograms divided by height in meters squared and serves as a quick screening tool rather than a perfect measure. The range that represents normal weight is 18.5 to 24.9. People in this band generally have the lowest risk of weight-related health problems compared with those who are underweight (below 18.5) or overweight and obese (25.0 and above). The other ranges correspond to underweight, overweight, and obesity, which are linked to higher risks for various chronic conditions. Keep in mind that BMI doesn’t account for muscle mass or fat distribution, but it’s a useful, widely adopted starting point for assessing weight status.