Graham a. ColditzGraham A. Colditz, MD, DrPH is a physician and epidemiologist whose work focuses on the causes of cancer and strategies to reduce the risk of cancer in individuals and in populations. Dr. Colditz received his MD from the University of Queensland, Ausralia, and his Doctorate in Public Health from the Harvard School of Public Health. He is Professor of Medicine at Brigham and Women's Hospital and Harvard Medical School where he leads the ongoing Nurses Health Study evaluating lifestyle factors and risk of chronic disease among women. He is Director for Education in the Harvard Center for Cancer Prevention and led the design of the center Web site, www.yourcancerrisk.harvard.edu. Read More Read Less