Evan Hadley, M.D. is Director of the Division of Geriatrics and Clinical Gerontology at the National Institute on Aging (NIA), which supports research throughout the U.S. on clinical aging issues. He received his M.D. from the University of Pennsylvania, and completed a research fellowship in NIA's Gerontology Research Center in 1980. Since then he has been responsible for developing NIA research programs on a variety of topics including menopause, physical frailty, clinical trials of interventions against disabling conditions, factors promoting healthy aging over the life span, and strategies to translate human genetic and physiologic findings on age-related outcomes into interventions that modulate adverse aging changes.