Keith HumphreysKeith Humphreys is a scholar, teacher, clinician, and public policy advisor in the addiction field. He has spent his career in the Department of Psychiatry at Stanford University School of Medicine and in the U.S. Veterans Health Administration. He ws senior policy advisor in the White House Office of National Drug Control Policy in the Barack Obama Administration, and has for many years advised Congress, the U.K. Parliament, and other officials about policy strategies for preventing and treating addiction. Read More Read Less