Welcome back to Joel Kahn, MD, one of the great gentle pugilists of the plant-based, evidence-based, lifestyle medicine movement. Joel has gotten a lot of air time since our last talk three years ago - he's a regular on The Doctors, weighing in with actual science against some of the crazier nutritional theories of our time (ie vegetables are dangerous).

And he's a publishing powerhouse, coming out with The Plant-Based Solution, The No B.S. Diet Book, Dead Execs Don't Get Bonuses, and Vegan Sex, with Ellen Jaffe Jones.