What is the main function of proteins in the body?

The main function of proteins in the body is to build up tissue. Proteins are essential macromolecules that serve as the body's building blocks. They play a critical role in the growth and repair of tissues, including muscles, organs, skin, and bones. Proteins are composed of amino acids, which are linked together in various sequences to form different types of proteins, each with specific functions.

These functions are vital for overall health, as proteins are involved in numerous physiological processes, including enzyme activity, immune responses, and the construction of cellular structures. While proteins can indeed provide energy in certain situations and are involved in hormonal regulation, their primary and most recognized role is in tissue synthesis and repair. They ensure that the body maintains its structure and function as needed.