The recommended dietary allowance (RDA) for protein is about 0.8 grams per kilogram of body weight for the average adult, translating to approximately 46 grams daily for women and 56 grams for men. This amount is essential to maintain muscle mass, support immune function, and promote overall health. However, athletes or those engaging in high levels of physical activity may require greater amounts to aid in recovery and muscle repair. Adequate protein intake is crucial for a balanced diet and optimal physical performance.