https://www.123articleonline.com/rss/author/404047/newyou-collagenArticles written by NewYou Collagen from 123ArticleOnline.comen-usCopyright (c) 123ArticleOnline.com All rights reserved. https://www.123articleonline.com/articles/1443465/does-collagen-really-work-bovine-vs-marine-which-is-better Collagen is the naturally available protein in the human body, is often referred to as the "building block" of youthful skin, healthy hair, and resilient connective tissues, Human body naturally produces collagen, collagen is present in skin, tendons, bones, ligaments, joints etc. But unfortunately After 20's, collagen production naturally declines, leading to visible signs of aging like fine lines, wrinkles, Joints pains, bones weakness and weaker hair.