Portions and the feeling of satiety: how does protein affect hunger hormones?

Protein is rightfully considered the most satiating macronutrient of all existing ones. When you include a sufficient amount of quality protein in your meal (whether eggs, fish, poultry, lean meat, or plant-based sources like tofu and lentils), a complex hormonal response is triggered in the body. Protein food stimulates the production of special satiety hormones, such as peptide YY and cholecystokinin, which suppress appetite and send a fullness signal to the brain.

Simultaneously, protein helps lower the level of ghrelin, the hormone responsible for triggering the feeling of hunger. Studies show that a high-protein breakfast is able to maintain satiety throughout the day, reducing overall cravings for evening snacks and sweets. This is especially relevant for mental workers who need to maintain a stable level of concentration without energy crashes.

To optimize the amount of protein in your diet and easily control portions, follow these recommendations:

A balanced amount of protein on your plate makes the diet more satisfying, protects muscle mass, and helps maintain a comfortable portion size without the use of willpower.