The most important nutrient in an athlete’s diet is protein. It’s important to eat enough protein because it helps repair and regrow damaged muscle, as well as helps keep blood, cartilage and bones healthy. Eating excess amounts, however, is doing more harm than good. Sulfur amino acids, a sub-category of amino acids found in protein-rich food, are eaten two-and-a-half times more than needed. This amino is tied to cardiovascular disease. A recent study from Penn State College of Medicine revealed that lower-protein diets, such as the vegan diet, may help lower the risk of heart disease. People who eat a lot of plant-based products typically consume lower amounts of these amino acids. The study does not suggest to totally eliminate the protein, but to limit it.