Which BMI category would a person with a BMI of 31 fall into?

Which BMI category would a person with a BMI of 31 fall into?

• A. Normal
• B. Overweight
• C. Obese
• D. Underweight

Answer: (C)

Understanding BMI categories helps interpret how weight relates to health risk. The common thresholds are: underweight is BMI below 18.5, normal weight is 18.5 to 24.9, overweight is 25.0 to 29.9, and obesity starts at 30.0 and higher. A BMI of 31.0 sits above 30, so it falls into the obese category (specifically obesity class I). It isn’t normal because it’s well above the normal range, it isn’t overweight because that ends at 29.9, and it isn’t underweight because it’s well above 18.5.

Understanding BMI categories helps interpret how weight relates to health risk. The common thresholds are: underweight is BMI below 18.5, normal weight is 18.5 to 24.9, overweight is 25.0 to 29.9, and obesity starts at 30.0 and higher. A BMI of 31.0 sits above 30, so it falls into the obese category (specifically obesity class I). It isn’t normal because it’s well above the normal range, it isn’t overweight because that ends at 29.9, and it isn’t underweight because it’s well above 18.5.