No doubt you've heard of Drs. Roizen and Oz, two of Oprah's favorite Home / Diet Book Reviews / YOU: On a Diet by Mehmet C. Oz and You-on-a-diet-cover. In the battle of the bulge, most dieters relying on willpower alone are destined to lose the fight, according to the recentlyYou: On a Diet aims to help you reduce unhealthy waist fat by two inches in two weeks. Find out what the diet it Zelman, MPH, RD, LD WebMD Expert Review ...