Collagen is a structural protein found in the connective tissues throughout the body. As the most abundant protein in the entire body, collagen accounts for between twenty-five to thirty-five percent of the body’s total protein composition. It is a primary building block for skin, ligaments, tendons, muscles, and bones, and it is also located in the blood vessels, teeth, and corneas. Collagen supplements have been claimed to promote brain, heart, and gut health, as well as help control weight and keep hair and nails healthy. They may help reduce the risk of bone disorders like osteoporosis and have the potential to help increase BMD and lower levels of proteins in the blood that stimulate bone breakdown.
- Hair and nails. Taking collagen may increase the strength of your nails by preventing brittleness. Additionally, it may stimulate your hair and nails to grow longer (23Trusted Source).
- Gut health. Although there is no scientific evidence to support this claim, some health practitioners promote the use of collagen supplements to treat intestinal permeability, or leaky gut syndrome.
- Brain health. No studies have examined the role of collagen supplements in brain health. However, some people claim they improve mood and reduce symptoms of anxiety.
- Weight loss. Some believe that taking collagen supplements may promote weight loss and a faster metabolism. There have not been any studies to support these claims.
- Help improve mood