David J. Nutt is a British psychiatrist and neuropsychopharmacologist specialising in the research of drugs which affect the brain and conditions such as addiction, anxiety and sleep.[1] He is a professor at the University of Bristol heading their Psychopharmacology Unit.[2] He also holds the Edmond J Safra chair in Neuropsychopharmacology at Imperial College, London.[3] Nutt is a member of the Co