Underweight BMI is defined as BMI less than:

Underweight BMI is defined as BMI less than:

• A. >30
• B. 18.5-24.9
• C. 25-29.9
• D. <18.5

Answer: (D)

BMI below 18.5 defines underweight. This cutoff, used in standard guidelines, helps identify individuals who may be undernourished or at risk for health problems related to low body mass. For context, normal weight is 18.5–24.9, overweight 25–29.9, and obesity 30 or higher. BMI is a quick screening tool that compares weight to height to flag potential nutrition or health issues.

BMI below 18.5 defines underweight. This cutoff, used in standard guidelines, helps identify individuals who may be undernourished or at risk for health problems related to low body mass. For context, normal weight is 18.5–24.9, overweight 25–29.9, and obesity 30 or higher. BMI is a quick screening tool that compares weight to height to flag potential nutrition or health issues.