What topics does this cannabis study cover?

This study covers research on: Addiction.

Where was this research published?

Published in Nordisk alkohol- & narkotikatidskrift : NAT on September 18, 2026.

Addiction

Cannabis legalization and uncertain alcohol and tobacco effects

Might cannabis Legalization Have Affected Public Health-Relevant Alcohol- and Tobacco-use Outcomes in Canada?

Nordisk alkohol- & narkotikatidskrift : NAT • September 18, 2026 • Highly Relevant

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AI Summary

This Commentary asks whether Canada’s legalization of non-medical cannabis and its legal supply, introduced in 2018, may have changed alcohol and tobacco use or related public-health outcomes. It considers the Canadian population and draws on existing epidemiological indicators and literature rather than reporting a new clinical or population study with original participant data. The authors note that cannabis legalization’s documented public-health effects have been mixed, including reductions in some cannabis-related crime and illegal-market indicators alongside increases in several acute and chronic health-problem indicators.

The central issue is whether cannabis and alcohol or tobacco act as substitutes, so that use of one displaces another, or as complements, so that use of one increases use of another. The abstract says recent indicators suggest possible small changes in alcohol and tobacco use, but it remains empirically unclear whether these developments were caused by cannabis legalization. Because alcohol and tobacco create a substantial public-health burden in Canada, the authors call for rigorous analytical methods to examine these outcomes in Canada and other jurisdictions. As an abstract-based summary, this Commentary cannot establish whether legalization caused changes in alcohol or tobacco use; it does not report new quantitative results, a sample, or an effect estimate.

💡 Key Findings

The relationship between cannabis legalization and alcohol or tobacco use remains causally unclear; observed changes in other substance use cannot yet be attributed to legalization.

High

95%

Existing evidence may reflect either substitution or complementarity, meaning cannabis could potentially displace or accompany alcohol and tobacco use, but the abstract does not establish which pattern applies.

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90%

The authors recommend systematic, rigorous evaluation of alcohol- and tobacco-related outcomes as part of assessing cannabis legalization’s overall public-health effects.

High

95%

📄 Original Abstract

Canada legalized the non-medical use and supply of cannabis in 2018. The public health-relevant outcomes of cannabis legalization documented to date have been mixed, with decreases in cannabis-related crime and illegal distribution markets, while with increases for many - acute and chronic - health problem indicators. One public health-relevant aspect of legalization that has not been adequately assessed to date are its potential effects on alcohol and/or tobacco use and related outcomes in the population. Existing literature suggests that cannabis legalization may impact alcohol and/or tobacco use in different ways and directions, through both 'substitution'- and/or 'complementarity'-type dynamics. While cannabis use prevalence has markedly increased through legalization, recent epidemiological indicators suggest the possibility of (small) changes in rspective other substance use, yet it is empirically unclear whether these developments are causally interrelated. Also considering the substantial adverse public health burden arising from alcohol and tobacco use in the Canadian population, this Commentary makes the case for systemic examination of the potential impacts of cannabis legalization on alcohol and/or tobacco use outcomes by way of rigorous analytical methods as part of assessing the overall public health-related effects of cannabis legalization in Canada as well as other jurisdictions where cannabis has been legalized.

Paper Type

📄 Research

Publication

Journal: Nordisk alkohol- & narkotikatidskrift : NAT
Published: September 18, 2026
PMID: 42763468
DOI: 10.1177/14550725261488522

Authors (4)

Benedikt Fischer Waypoint Research Institute, Waypoint Centre for Mental Health Care, Penetanguishene, Ontario, Canada.
Wayne Hall National Centre for Youth Substance Use Research, Faculty of Health and Behavioural Sciences, University of Queensland, St Lucia, Australia.
Didier Jutras-Aswad Research Centre, Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada.
Bernard Le Foll Waypoint Research Institute, Waypoint Centre for Mental Health Care, Penetanguishene, Ontario, Canada.