Which health outcome is particularly associated with being underweight rather than overweight or obese?

• A. Increased overall mortality due to obesity-related comorbidities, which is a risk only for obese individuals.
• B. Increased risk of type 2 diabetes driven primarily by high adiposity.
• C. Elevated risk of heart disease from significant visceral adiposity.
• D. Osteoporosis and compromised immune function due to insufficient caloric and nutrient intake.

Answer: (D)