Why Does Protein Keep You Full Longer? Have you ever noticed that after eating a sugary snack, you're hungry again within an hour, but a meal with eggs, chicken, fish, or tofu keeps you satisfied much longer? The difference isn't simply about the amount of food you eat. Protein influences hunger hormones, digestion, and the brain's appetite regulation system, making it one of the most satiating nutrients in a balanced diet. Whether your goal is healthy weight management, main