Nortin M. Hadler, M.D., M.A.C.P., M.A.C.R., F.A.C.O.E.M., is professor of medicine and microbiology/immunology at the University of North Carolina at Chapel Hill and attending rheumatologist at UNC Hospitals. He is author of several books, including "Stabbed in the Back: Confronting Back Pain in an Overtreated Society" and "Rethinking Aging: Growing Old and Living Well in an Overtreated Society".