Nassim Sahili, a content creator specializing in bodybuilding and nutrition, shares nutritional advice and training strategies for sports and fitness enthusiasts on his YouTube channel. He uses a scientific and popular approach to address topics like the effectiveness of food in building muscle mass, highlighting concepts often misunderstood by the general public. In one video, he delves into a fundamental aspect of nutrition: protein, explaining why its quality and bioavailability vary depending on the source.
Different proteins and their effectiveness
Protein, although present in many foods, does not all have the same impact on muscle growth and health. For example, a serving of beef and an equivalent serving of lentils contain the same number of grams of protein, but their effectiveness in the body varies significantly. Animal and plant proteins have different properties and benefits that influence their quality and absorption.
Understanding Proteins: Structure and Role in the Body
Proteins are composed of long chains of amino acids—essential building blocks—that link together to form complex structures called polypeptides. During digestion, these polypeptides are broken down into dipeptides and tripeptides, and then into simple amino acids, which are absorbed by the body and used to build and repair muscle tissue, produce enzymes and hormones, and support the immune system. The quality of these proteins is therefore essential for the proper functioning of the body.
