NB

Collagen is secreted by a variety of different cells, but primarily by connective tissue cells. While young, the body consistently produces collagen, but collagen synthesis begins to decline around the age of 40, with a dramatic reduction in synthesis in women after menopause. By the age of 60 there is typically a considerable decline in collagen production. On the other hand, Collagen is the most abundant protein found in humans as well as all vertebrate animals. The protein that makes up collagen contains amino acids that are essential, meaning the body cannot produce them on its own and must be obtained through diet or supplementation, and non-essential, meaning the body can produce them. However, unless a person is in prime health condition, the body has a hard time producing enough non-essential amino acids, in particularly glycine and proline. Therefore, essential and non-essential amino acids have to be obtained through food or dietary supplements to support proper collagen production.