How does increasing protein intake benefit the elderly?

Increasing protein intake for the elderly primarily supports overall health and muscle mass, making this the most suitable answer. As individuals age, they often experience a natural decline in muscle mass and strength, known as sarcopenia. Adequate protein intake is crucial in mitigating this loss by providing the necessary building blocks for muscle repair and growth. Additionally, protein plays a vital role in numerous bodily functions, including immune response, hormone production, and cellular repair.

Enhancing muscle mass through sufficient protein consumption can lead to improved mobility, balance, and overall quality of life for older adults. This is especially important as maintaining muscle mass can help prevent falls and associated injuries, which are common in the elderly population.

The other options, while sometimes relevant in broader contexts, do not specifically address the main benefits of increased protein intake for older adults. For example, while protein can influence metabolic rate, it is not as critical a factor for the elderly as muscle mass maintenance. Quick weight loss and boosting carbohydrate consumption do not accurately reflect the advantages of a higher protein diet for this demographic.