What is the recommended total protein intake as a percentage of total calories?

The recommended total protein intake as a percentage of total calories is typically set at 10-20%. This range is established to ensure that individuals obtain sufficient protein for various physiological functions, including tissue repair, immune function, hormone production, and enzyme synthesis.

Protein is a macronutrient that plays a vital role in maintaining muscle mass, particularly in adults, including older adults who may be at increased risk for muscle wasting. Meeting the protein needs within this percentage range supports overall health and can help prevent conditions like sarcopenia, especially in geriatric populations.

This recommendation for protein intake is aligned with guidelines from health organizations, which emphasize a balanced approach to macronutrient distribution in the diet. Consuming protein above this range (such as in the upper percentage options) may not provide additional benefits and could lead to excess caloric intake if not balanced with other macronutrients like carbohydrates and fats. Conversely, lower protein intake (such as the lower-end options) might not fulfill the body's needs, especially during periods of illness or recovery.