The Definitive Guide to Collagen

For decades, the health community had written off collagen as a “useless” protein. It wasn’t essential, in that it contained no amino acids you couldn’t make yourself. It didn’t contribute directly to muscle protein synthesis, so the bodybuilders weren’t interested. In all my years running marathons and then competing in triathlon at an elite level, no one talked about collagen. It was completely ignored, especially after the rash of collagen-based “liquid diets” ended up with a lot of people dead or in the hospital.