You’ve probably heard a lot of stories about collagen. It’s a protein that your body naturally produces. Collagen is essential for the health of the skin, bones, heart, liver, wound healing, skin care, and the immune system. As you age, it is important to ensure that you are receiving adequate amounts of collagen, either through diet or supplementation. This article review the top collagen benefits, types of collagen, collagen uses, and side effects of taking collagen.