High-protein foods are those that contain a significant amount of protein, an essential nutrient that helps build and repair tissues in the body. Common sources of high-protein foods include meat, fish, eggs, dairy products, and legumes. Protein is crucial for muscle growth, immune function, and overall health. Many people incorporate high-protein diets for various reasons, such as weight management or muscle building. Foods rich in protein can help increase feelings of fullness, which may reduce overall calorie intake. Popular high-protein diets include paleo and keto, which emphasize protein-rich foods while limiting carbohydrates.