What is the main function of proteins in the body?

The main function of proteins in the body is to build and repair body tissues. Proteins are composed of amino acids, which are the building blocks necessary for the formation of muscles, skin, organs, and other tissues. They play a critical role in growth, development, and healing processes, as well as in maintaining the overall structure and function of cells.

Additionally, proteins are essential for the production of enzymes and hormones, which regulate various bodily functions. This highlights their importance beyond merely providing structural support, as they are involved in facilitating biochemical reactions that are vital for life.

While proteins can also provide energy, particularly in the absence of carbohydrates and fats, their primary role is clearly oriented toward tissue construction and repair. This differentiates them from substances that primarily store fat or enhance digestion, making this function of proteins foundational to overall health and bodily maintenance.