What does skinfold thickness measure in a nutritional assessment?

• A. The body's fat content
• B. Bone density
• C. Muscle mass
• D. Hydration status

Answer: (A)

Skinfold thickness measures the body's fat content by estimating subcutaneous fat stores. Using calipers at standardized sites (such as the triceps and other body regions), the thickness of the skin and underlying fat is measured in millimeters and used in reference equations to estimate overall body fat percentage. This provides a practical way to track fat reserves in children as part of nutritional assessment, helping identify undernutrition or overweight trends over time. It does not measure bone density, muscle mass, or hydration status directly; those require other methods or indicators. Keep in mind that accuracy depends on standardized technique and can be affected by hydration or edema, so proper training and consistent sites are important.