Proteins are made up of amino acids, some of which cannot be synthesized by humans. Unlike animal proteins, plant proteins generally do not contain all the amino acids that humans need in sufficient quantities. This is why it is necessary to vary the sources of plant proteins (cereals, legumes) in order to provide the body with all the amino acids it needs. In terms of digestibility, animal proteins are generally slightly more digestible than plant proteins.

For further information, we recommend that you consult :

- The MangerBouger.fr website
- The Santé Publique France website, and its nutrition and physical activity section
- The ANSES website (Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail), and its section on food and human nutrition.
- The French Nutrition Society website
- The report of the PNNS, Programme Nationale de Nutrition et Santé (2018-2023), which defines all nutritional recommendations.