Professional triathlete, [Rip Esselstyn,](http://www.engine2diet.com/about_e2/About_Rip) has adopted a plant-based diet, [the Engine 2 Diet,](http://www.engine2diet.com/~engine2/about_e2) at the advice of his father, [Dr. Caldwell B. Esselstyn,](http://www.heartattackproof.com/) chief of surgery at the Cleveland Clinic, who discovered through medical research that a plant-based, low-fat diet could reverse heart disease and diabetes.
