Collagen is a naturally occurring fibrous protein that provides structure to the body's tissues. It makes up about one third of all protein in the human body, more than any other type of protein in the body by mass. The body's supply of collagen depletes as people get older but excess sun exposure, smoking and poor diet can also inhibit collagen production. Increasing collagen intake is beneficial for people who are starting to see and feel the first signs of aging.
Because collagen is found in the body's connective tissues, it is integral to joint health, skin and hair health. Collagen can help improve the appearance of the skin, as it promotes healthy reparation of skin cells. This may leave skin feeling firmer and looking younger.
Collagen is often uses by people suffering from joint pain. A 2017 study published in the Journal of Arthritis found that oral collagen supplements helped relieve pain for patients with osteoarthritis, As levels of collagen decrease, joints begin to swell and stiffen. Increasing collagen intake can provide relief from arthritis, and may help to reduce the risk of joint deterioration. This beneficial protein may also boost metabolism, relieve digestive issues, and strengthen teeth and nails.