Protein is an essential nutrient made up of building-block
chemicals called amino acids. Protein provides energy and is needed for the
body to make new cells, to maintain and rebuild muscles, to carry other
nutrients, to act as messengers in the body, and to support the immune
You can get protein from meat, eggs, fish, poultry, dairy, legumes, soy, nuts, and grains.
How this information was developed to help you make better health decisions.