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

Martin Frisher, PhD Biography

Senior Lecturer at the School of Pharmacy at Keele University
Not Clearly Pro or Con to the question "Should Marijuana Be a Medical Option?"

“The results of this study indicate that the incidence and prevalence of diagnoses of schizophrenia and psychoses in general practice did not increase between 1996 and 2005…

This study does not therefore support the specific causal link between cannabis use and the incidence of psychotic disorders…

The most parsimonious explanation of the results reported here are that the schizophrenia/psychoses data presented here are valid and the causal models linking cannabis with schizophrenia/psychoses are not supported by this study.”

“Assessing the Impact of Cannabis Use on Trends in Diagnosed Schizophrenia in the United Kingdom from 1996 to 2005,” Schizophrenia Research, Sep. 2009

Involvement and Affiliations:
  • Senior Lecturer, School of Pharmacy, Keele University, 1997-present
  • Represented United Kingdom (UK) government, Scientific Board of the European Monitoring Centre for Drugs and Drug Addiction (EMCDDA), 2000-2003
  • PhD, 1987, school unknown
  • Has published over 100 papers in two main areas: addiction research and general practice consultation data.
Quoted in:
  1. Does Marijuana Use Increase the Risk of Psychosis (Including Schizophrenia)?