A high-protein diet influences metabolism by increasing the thermic effect of food, which boosts calorie burning during digestion. Protein-rich foods enhance feelings of fullness and promote muscle retention, especially during weight loss. Higher muscle mass correlates with increased resting metabolic rate, thereby aiding weight management. Additionally, protein supports muscle repair and growth, making it essential for those engaged in regular exercise. Balancing protein intake with complex carbohydrates and healthy fats creates a sustainable approach to nutrition.