What is one of the roles of proteins in the body?

Proteins play a crucial role in building and repairing tissue in the body, making them fundamental to overall health and physical function. They are made up of amino acids, which are the building blocks necessary for the formation of muscle, skin, organs, and many other tissues. When the body undergoes growth, repair from injury, or muscle development from exercise, proteins are vital in facilitating these processes. This role is so significant that without adequate protein intake, the body can struggle to heal and maintain optimal function.

While proteins can provide energy, their primary function is not energy supply, as this role is often fulfilled by carbohydrates and fats. Although some proteins can aid in carrying vitamins, that is generally the function of specific carriers or enzymes rather than proteins in general. Enhancing flavor pertains more to the culinary uses of proteins in foods rather than their biological functions within the body. Therefore, building and repairing tissue is the most accurate representation of one of the primary roles that proteins serve within the human body.