Collagen is the main structural protein of the various connective tissue in animals.
As the main component of connective tissue, it is the most abundant protein in mammals making up from 25% to 35% of the whole-body protein content. This protein is involved with skin strength and elasticity. After the age of twenty we produce less collagen every year. The effects become noticeable after several years. The skin becomes thinner, drier, and less elastic. The hair loses its strength and shine. The nails become fragile.
Collagen makes up articular cartilage, the tissue that covers the ends of bones at the joints and allows them to move smoothly against one another. The loss of collagen as we age also have an impact to our joints. UV exposure, pollution, poor diet choices and unhealthy habits may cause rapid loss of collagen.