Otis Brawley, M.D., is the American Cancer Society's chief medical and scientific officer. He spoke eloquently about how the health system doesn't provide incentives for the best care, pointing out that the "system isn't failing; failure is the system."

One of his initial statements: "The second leading cause of cancer is the combination of very little physical activity, bad diet, which usually means high caloric intake, and obesity."

You can watch his entire presentation here.