How would you define malnutrition versus undernutrition?

• A. Malnutrition involves an imbalance of nutrient intake, absorption, or utilization; undernutrition is inadequate intake/absorption of nutrients.
• B. Malnutrition is only due to undernutrition.
• C. Undernutrition is a deficiency of fats.
• D. Malnutrition refers to obesity.

Answer: (A)

Malnutrition is a broad term for any disturbance in nutrient intake, absorption, or use by the body, including imbalances, deficiencies, or excesses. Undernutrition is specifically when intake or absorption is insufficient to meet the body's needs. So, undernutrition is a type of malnutrition, but malnutrition also includes situations of overnutrition and nutrient imbalances that don’t involve overall insufficient intake. That’s why the best definition recognizes malnutrition as the overall nutrient imbalance and undernutrition as the inadequate intake/absorption component. The other statements are too narrow or incorrect because they imply malnutrition is only about undernutrition, or they misstate what undernutrition or malnutrition involve (such as focusing on fats or equating malnutrition solely with obesity).