Ian K. Smith, M.D. is the #1 bestselling author of The Fat Smash Diet, Extreme Fat Smash Diet, The 4 Day Diet, and Eat. He is a medical contributor to The Rachael Ray Show and the host of radio show HealthWatch, and he has served as the medical/diet expert for six seasons on VH1's Celebrity Fit Club. Dr Smith is the founder of two major national health initiatives – the 50 Million Pound Challenge and the Makeover Mile – that have helped millions of people lose weight and improve their health. A graduate of Harvard, Columbia, and the University of Chicago Pritzker School of Medicine, he was appointed to the President's Council on Fitness, Sports and Nutrition in 2010.