Last updated on: 6/25/2010 | Author:

David M. Semple, MBBS Biography

Consultant Psychiatrist at Hairmyres Hospital
Not Clearly Pro or Con to the question "Should Marijuana Be a Medical Option?"

“Meta-analysis suggests that cannabis is a risk factor, increasing the chances of developing schizophrenia or a schizophrenia-like psychotic illness by approximately three-fold…

Our findings underline the need to recognize the use of cannabis as a significant risk factor for schizophrenia and schizophrenia-like psychotic illness.”

Cowritten with Andrew M. McIntosh and Stephen M. Lawrie, “Cannabis as a Risk Factor for Psychosis: Systematic Review,” Journal of Psychopharmacology, Mar. 2005

Theoretical Expertise Ranking:
     Key Experts
Physicians [Physicians are the "key experts" in the medical marijuana debate because the issue is thought by many to be ultimately based on the medical value and risks of marijuana, and Physicians, with their training and clinical work, should (at least in theory) have the best knowledge of marijuana's medical value and risks.] [Note: Key Experts definition varies by sites that have this designation.]
Involvement and Affiliations:
  • Consultant Psychiatrist, Hairmyres Hospital, 2004-present
  • Honorary Fellow, Division of Psychiatry, University of Edinburgh
  • Former Lecturer and Specialist Registrar, Royal Edinburgh Hospital, University of Edinburgh
  • MBBS, University of Edinburgh, 1992
  • None found
Quoted in:
  1. Does Marijuana Use Increase the Risk of Psychosis (Including Schizophrenia)?