Alcohol and Cannabis Have Opposite Effects on the Immune System | Research

The takeaway

A review comparing alcohol and cannabinoid effects on the immune system found that alcohol promotes inflammation while cannabinoids tend to suppress it, suggesting potential therapeutic applications for cannabinoids in alcohol-related immune damage.

Read this if you are interested in how cannabis and alcohol differently affect the immune system.

Alcohol and cannabinoids produce opposite effects on inflammatory cytokines

What the researchers found

This review compared the immunomodulatory effects of alcohol and cannabinoids, finding that they produce largely opposite effects on the immune system.

Alcohol promotes inflammation by increasing pro-inflammatory cytokines and disrupting immune cell function, contributing to organ damage in chronic drinkers. Cannabinoids, by contrast, generally suppress inflammatory responses through CB1 and CB2 receptor activation.

The review presented cytokine data from human dendritic cells showing divergent effects of alcohol and cannabinoids on cytokine production. The endocannabinoid system was identified as a potential therapeutic target for treating alcohol-induced inflammation, with novel strategies including cannabinoid receptor modulation for alcohol dependence treatment.

Why it matters

Understanding that alcohol and cannabinoids have opposite immune effects opens the possibility that cannabinoid-based therapies could counteract alcohol-induced immune damage. This has implications for both addiction treatment and management of alcohol-related organ disease.

The numbers in context

Cytokine data from human dendritic cells; compared CB1 and CB2 receptor effects; reviewed in vitro, in vivo, and clinical evidence for therapeutic applications

How the study worked

Narrative review of published literature on neuro-immunomodulatory effects of alcohol and cannabinoids. Included original cytokine array data from human monocyte-derived dendritic cells comparing alcohol and cannabinoid effects.

What this study cannot tell us

Narrative review with potential for selective citation. Cytokine data from cell cultures may not reflect whole-body immune responses. The therapeutic potential of cannabinoids for alcohol dependence remains largely theoretical.

How to read the evidence

Narrative review with original cytokine data, presenting a theoretical framework rather than proven clinical applications.

When this study was published

Published in 2015. Research on cannabinoids for alcohol-related conditions has expanded.

The bigger picture

The concept that endocannabinoid modulation could treat alcohol dependence represents a novel therapeutic approach. If cannabinoids can reduce alcohol-induced inflammation while also addressing addiction mechanisms, this could be a dual-benefit treatment strategy.

Questions still open

Can cannabinoid-based therapies reduce liver inflammation in alcoholics? Would CB2-selective agonists (non-psychoactive) be effective? Does cannabis use alongside alcohol modify alcohol's inflammatory effects in real-world use?

Common questions

Does cannabis protect against alcohol damage?

This review found that cannabinoids have anti-inflammatory effects that are opposite to alcohol's pro-inflammatory effects. However, this is based primarily on cell and animal studies. Using cannabis alongside alcohol has not been proven to protect against alcohol damage in humans.

Could cannabinoids treat alcoholism?

The review identified this as a theoretical possibility based on the endocannabinoid system's role in addiction and inflammation. Some preclinical studies supported the concept, but clinical evidence was not established.

Read the original research

Alcohol Versus Cannabinoids: A Review of Their Opposite Neuro-Immunomodulatory Effects and Future Therapeutic Potentials.

Journal of alcoholism and drug dependence, 3(1)

View on PubMed ↗

Citation

Nair, Madhavan P; Figueroa, Gloria; Casteleiro, Gianna; Muñoz, Karla; Agudelo, Marisela. (2015). Alcohol Versus Cannabinoids: A Review of Their Opposite Neuro-Immunomodulatory Effects and Future Therapeutic Potentials.. Journal of alcoholism and drug dependence, 3(1).