MOSCOW, Mar 8 Dermatologist and nutritionist Galina Fedenkova spoke about how the use of collagen affects the body. According to her, collagen is one of the most popular dietary supplements on the market today, in particular demand among people who are in pursuit of youth, beauty and health. It is an important protein for the body, which is involved in the formation of connective tissue. “The structure of the protein fibers look like springs. With age, these “springs” shrink or fall apart, which causes wrinkles, joint diseases, deterioration of hair, nails, tendons and other,” said the specialist. According to Fedenkova, the age factor does not always play a special role in the lack of collagen. Collagen fibers also break down glucose and vitamin C deficiency.