Henry is a medical graduate of University College Dublin, with M.D. and D.Sc. degrees from the National University of Ireland and is a world authority in experimental neuropathology with emphasis upon the peripheral neuropathies. He has held many positions of service at UC San Diego, including interim chair of the Department of Pathology, director of the Pathology Residency Program, head of the Division of Neuropathology, neuropathologist to the Veterans Affairs of San Diego Healthcare System and director of the Neuropathology Residency Program. He also served as chair of the University of California San Diego Academic Senate and then of the UC system-wide Academic Senate (2009-10). Henry has over 200 published articles and has mentored the academic careers of many clinical and research fellows, including Drs. Calcutt (co-founder of WinSanTor) and Mizisin (chief scientific officer, WinSanTor).