Oprah Winfrey first referred to Mehmet Oz as "America's doctor" in 2004, during one of his earliest appearances on her television show. The label stuck. Oz was a rare find: so eloquent and telegenic that people are often surprised to learn that he is a highly credentialled member of the medical establishment. ... "The Dr. Oz Show" frequently focusses on essential health issues: the proper ways to eat, relax, exercise, and sleep, and how to maintain a healthy heart. Much of the advice Oz offers is sensible, and is rooted solidly in scientific literature.