Walter C Willett MD DrphWalter C. Willett, MD, DrPH, has led the Department of Nutrition at the Harvard T.H. Chan School of Public Health for over twenty years and is a professor of medicine at Harvard Medical School. A world-renowned researcher, he is a lead investigator fr the landmark Nurses' Health Study and Health Professionals Follow-up Study. He has won many honors, including the Mott Prize, the prestigious award of the General Motors Cancer Research Foundation. Read More Read Less