Dr. Mark Hyman, co-founder and chief medical officer of Function Health, said Friday that chronic disease transcends ...

Dr Mark Hyman is a founder and senior advisor for the Cleveland Clinic Center for Functional Medicine and a New York Times best-selling author. He regularly gives health advice to his 3.2million ...

It's difficult to out-Oz Dr. Oz, America's Quack, who has raked in giant piles of money by promoting pseudoscience on his TV show. But at least one person comes perilously close: Dr. Mark Hyman.