Which condition may increase protein needs in older adults?

• A. Acute illness
• B. Regular exercise
• C. Stable weight
• D. Adequate hydration

Answer: (A)

When the body is fighting illness, protein needs rise because immune defense and tissue repair rely on amino acids. Acute illness drives inflammation and increases protein turnover, so more protein is required to supply amino acids for immune proteins and for repairing damaged tissues. In older adults, anabolic resistance makes it harder for the muscle to use protein efficiently, so a higher intake is often needed to preserve lean mass and support recovery. Regular exercise can raise protein needs for repair, but the immediate and sustained increase during illness is a more consistent factor; stable weight or adequate hydration do not inherently elevate daily protein requirements.