Harold G. Koenig, MD, completed his undergraduate education at Stanford University, his medical school training at the University of California at San Francisco, and his geriatric medicine, psychiatry, and biostatistics training at Duke University Medical Center. He is on the faculty at Duke as professor of psychiatry and behavioral sciences and associate professor of medicine. Dr. Koenig is also director of the Center for Spirituality, Theology, and Health at Duke University Medical Center, and is Distinguished Adjunct Professor at King Abdulaziz University in Jeddah, Saudi Arabia. Dr. Koenig has published extensively in the fields of mental health, geriatrics, and religion, with over 400 scientific peer-reviewed articles and book chapters and 40 books in print or in preparation. He has given invited testimony to both the U.S. Senate and the U.S. House of Representatives on the role of religion in public health, and is the recipient of the 2012 Oskar Pfister Award from the American Psychiatric Association.