Collagen is the main structural and most abundant protein in your body. Accounting for about one-third of its protein composition. It’s one of the major building blocks of bones, skin, muscles, tendons, and ligaments. It has various important roles, including providing structure to your skin. In recent years collagens gained popularity as a nutritional supplement. Collagen is an important protein that provides structure for many parts of the body. As you age, your body produces less and lower quality collagen. Collagen is found in large quantities in the connective tissues of animals like beef. Collagen as supplement is gaining popularity — hydrolyzed collagen (collagen peptides) in particular. There aren’t many studies on collagen supplements, but those that exist show promise for benefits in the following areas: