QUOTE : neurosurgeon. I graduated from the University of North Carolina at Chapel Hill in 1976 with a major in chemistry and earned my M.D. at Duke University Medical School in 1980. During my eleven years of medical school and residency training at Duke as well as Massachusetts General Hospital and Harvard, I focused on neuroendocrinology, the study of the interactions between the nervous system and the endocrine system—the series of glands that release the hormones that direct most of your body’s activities. I also spent two of those eleven years investigating how blood vessels in one area of the brain react pathologically when there is bleeding into it from an aneurysm—a syndrome known as cerebral vasospasm. After completing a fellowship in cerebrovascular neurosurgery in Newcastle-Upon-Tyne in the United Kingdom, I spent fifteen years on the faculty of Harvard Medical School as an associate professor of surgery, with a specialization in neurosurgery. During those years I operated on countless patients, many of them with severe, life-threatening brain conditions.