Protein contributes to satiety in a diet by increasing the feeling of fullness and reducing hunger. This macronutrient takes longer to digest compared to carbohydrates, which helps sustain energy levels over time. Additionally, protein-rich foods can stimulate the release of satiation hormones, such as peptide YY and glucagon-like peptide-1. Consuming adequate protein can also lead to decreased calorie intake overall, making it beneficial for weight management. Moreover, incorporating protein sources such as lean meats, dairy products, beans, and legumes can promote muscle preservation, particularly during weight loss efforts.