A high-protein diet can significantly impact body composition by promoting increased muscle mass and aiding in weight management. Protein supports the development of lean muscle, which can enhance metabolism and lead to fat loss when combined with regular exercise. Additionally, protein has a higher thermic effect compared to fats and carbohydrates, meaning the body burns more calories during its digestion. However, balance is crucial, as excessively high protein intake can strain the kidneys and may lead to nutrient deficiencies if not properly managed.