The endocannabinoid system plays a role in alcohol reward processing, and some evidence suggests cannabinoids could help treat alcohol use disorder, but concurrent use carries risks.
Addiction medicine specialists, harm reduction practitioners, and researchers investigating cannabinoid therapeutics.
CB1 and CB2 receptors modulate alcohol reward pathways, but combined use carries its own risks
What the researchers found
The endocannabinoid system, particularly CB1 and CB2 receptors, modulates the brain's reward circuitry for alcohol. Some researchers propose cannabis as a substitute medication for AUD, but concurrent use may increase adverse outcomes.
Why it matters
Alcohol use disorder is undertreated and current medications have limited effectiveness. If cannabinoids can reduce alcohol consumption or craving, they could address a major public health gap.
The numbers in context
Review covers CB1 and CB2 receptor involvement in dopaminergic mesolimbic reward pathways related to alcohol.
How the study worked
Narrative review chapter examining preclinical and clinical evidence on the endocannabinoid system's role in alcohol reward, the therapeutic potential of cannabinoids for AUD, and risks of concurrent use.
What this study cannot tell us
Narrative review without systematic methodology. Most evidence comes from preclinical models. Human clinical trial data is extremely limited.
How to read the evidence
Narrative review with primarily preclinical evidence and very limited human clinical data.
When this study was published
Published in 2024.
The bigger picture
The "cannabis as harm reduction for alcohol" debate is increasingly prominent as legalization expands. This review frames the biological plausibility while acknowledging the real-world complexity.
Questions still open
- Would specific cannabinoid compounds be more effective than whole-plant cannabis for reducing alcohol consumption?
- Does substituting cannabis for alcohol produce a net reduction in overall harm?
Common questions
Can cannabis help someone stop drinking?
Is it safer to use cannabis instead of alcohol?
Read the original research
Cannabinoid for alcohol use disorder.
International review of neurobiology, 178, 301-322
Citation
Marquez, Júlia Dalfovo; Dezanetti, Talissa; Walz, Roger; de Carvalho, Cristiane Ribeiro. (2024). Cannabinoid for alcohol use disorder.. International review of neurobiology, 178, 301-322. https://doi.org/10.1016/bs.irn.2024.08.005
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