As more research is needed, we can't ensure everything you hear about collagen is true -- for example, there's little evidence of collagen supplements helping nail and hair growth. That being said ...

However, more research is needed to understand how effectively collagen supplements help repair tissue. Tendons depend on collagen for strength and durability and can weaken as we age. Taking ...

However, there is limited research on the effects ... by drug manufacturers about biotin, collagen, and other beauty ...