BRADLEY J. WILCOX, M.D., M.Sc., received his medical degree from the University of Toronto and trained in internal medicine at the Mayo Clinic and geriatric medicine at Harvard Medical School. He is an internationally recognized expert on healthy aging, a U.S. National Institute on Aging–funded scientist, and a principal investigator in geriatrics for the Pacific Health Research Institute. Dr. Willcox is Co-Principal Investigator of the Okinawa Centenarian Study and Assistant Professor of Geriatric Medicine at the University of Hawaii.