Dr. John La Puma is a board-certified specialist in internal medicine. Dr. La Puma hosts the weekly TV segment "What's Cooking With ChefMD" as part of the TV series Health Corner, which airs Sundays on Lifetime Television. He is also a successful author. His first book for a general audience, The RealAge Diet: Make Yourself Younger With What You Eat, became a New York Times bestseller; his first cookbook, Cooking the RealAge Way, became a number one cookbook on Amazon.