High-protein diets can positively affect muscle growth by providing the necessary building blocks (amino acids) for muscle repair and synthesis. Increased protein intake promotes a positive nitrogen balance, essential for muscle recovery and growth following resistance training. Studies indicate that higher protein consumption can also aid in preserving muscle mass during weight loss. However, it is important to balance protein intake with overall caloric needs and consider food sources to ensure a well-rounded diet conducive to both health and fitness goals.