Lower-Risk Cannabis Use Guidelines for Psychosis

The Lower-Risk Cannabis Use Guidelines for Psychosis (LRCUG-PSYCH) are evidence-based recommendations for reducing psychosis-related risks when using cannabis. The guidelines aim to empower individuals to understand the potential risks related to their cannabis use and to make choices about their consumption to help reduce their individual risk of psychotic outcomes. The LRCUG-PSYCH were developed by a team of international health and addiction experts and are based on a comprehensive review and evidence grading of scientific literature on cannabis use and its associations with the development, course, and outcomes of psychosis. The LRCUG-PSYCH were published in the Journal of Dual Diagnosis in 2023 and consist of 11 core public health oriented recommendations.

Who are the LRCUG-PSYCH for?

The LRCUG-PSYCH are a public mental health resource for psychosis-related education, prevention, and harm reduction for non-medical cannabis use. The guidelines are for:
  • Individuals who are thinking about using cannabis or who are actively using cannabis
  • Individuals who have a history of, or are at an elevated risk of developing psychosis
  • Clinicians, professionals, organizations or government entities dedicated to improving the health of people who use cannabis
The Cannabis & Psychosis Clinical Toolkit
In addition to the guidelines, a suite of resources have been developed to support awareness, education and implementation of the LRCUG-PSYCH in clinical practice.
Special thanks

The LRCUG-PSYCH have been endorsed by the following national public health and substance use organizations: Schizophrenia Society of Canada (SSC), Canadian Public Health Association (CPHA), Canadian Research Initiative on Substance Misuse (CRISM) and the Canadian Consortium for Early Intervention Psychosis (CCEIP).

Association canadienne santé publique
canadian consortium
The LRCUG-PSYCH development and dissemination are made possible through the support of Health Canada, Quebec Ministry of Health and Social Services, the Université de Montréal’s Expertise and Collaboration Center in Concurrent Disorders, and the Centre hospitalier de l’Université de Montréal Research Centre. Health Canada and Quebec Ministry of Health and Social Services had no influence on the content of the LRCUG-PSYCH and related materials