Cannabis use in early adulthood is prospectively associated with prescriptions of antipsychotics, mood stabilizers, and antidepressants

Acta Psychiatr Scand. 2020 Feb;141(2):149-156. doi: 10.1111/acps.13104. Epub 2019 Oct 11.

Abstract

Objective: Cannabis is an acknowledged risk factor for some mental disorders, but for others the evidence is inconclusive. Prescribed medicinal drugs can be used as proxies for mental disorders. In this study, we investigate how use of cannabis is prospectively related to prescription of antipsychotics, mood stabilizers, antidepressants, and anxiolytics.

Methods: Data on cannabis exposure and relevant confounders were obtained from 2,602 individuals in the longitudinal Young in Norway Study, providing survey data from four data collection waves between 1992 and 2006. Data were coupled with information about prescriptions for psychotropic drugs from the Norwegian Prescription Database between 2007 and 2015.

Results: Past year cannabis use increased the risk of prescription of antipsychotics (OR = 5.56, 95 % CI 1.64 - 18.87), mood stabilizers (OR = 5.36, 95 % CI 1.99 - 14.44) and antidepressants (OR = 2.10, 95 % CI 1.36 - 3.25), after accounting for sociodemographic variables, conduct problems, additional drug use, mental distress, and prescriptions the year before cannabis use was measured.

Conclusions: In this study of young adults from the general population, past year cannabis use was associated with later prescriptions of antipsychotics, mood stabilizers, and antidepressants.

Keywords: Cannabis; affective disorders; mental disorders; prescriptions; psychotic disorders.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Alcoholic Intoxication / epidemiology
  • Anti-Anxiety Agents / therapeutic use
  • Antidepressive Agents / therapeutic use*
  • Antimanic Agents / therapeutic use*
  • Antipsychotic Agents / therapeutic use*
  • Conduct Disorder / epidemiology
  • Conduct Disorder / psychology
  • Female
  • Humans
  • Longitudinal Studies
  • Male
  • Marijuana Use / epidemiology*
  • Marijuana Use / psychology
  • Norway / epidemiology
  • Odds Ratio
  • Prospective Studies
  • Psychological Distress
  • Psychotropic Drugs / therapeutic use
  • Smoking / epidemiology
  • Substance-Related Disorders / epidemiology
  • Young Adult

Substances

  • Anti-Anxiety Agents
  • Antidepressive Agents
  • Antimanic Agents
  • Antipsychotic Agents
  • Psychotropic Drugs