Cannabis May Affect Depression Risk Through Epigenetic Changes to Depression Genes
Multiple genes associated with depression are epigenetically regulated by cannabis or cannabis-derived compounds, affecting processes critical for neuronal development, functioning, and survival.
Quick Facts
What This Study Found
Cross-referencing cannabis methylation studies with the largest depression GWAS revealed that multiple depression-associated genes are epigenetically regulated by cannabis exposure. This regulation occurred across diverse organisms, tissues, and developmental stages and affected genes involved in neuronal development, synaptic functioning, and survival, as well as genes implicated in other mental disorders.
Key Numbers
Multiple depression-associated genes found to be epigenetically regulated; effects across diverse organisms, tissues, and developmental stages
How They Did This
Literature search identifying genes differentially methylated by cannabis/cannabinoid exposure from methylome-wide studies, then cross-referenced with depression-associated loci from the largest available GWAS of depression.
Why This Research Matters
This provides a potential molecular mechanism connecting cannabis exposure to depression risk, moving beyond epidemiological associations to suggest specific epigenetic pathways.
The Bigger Picture
Epigenetic changes can be inherited and persist long after exposure. If cannabis alters methylation of depression genes, this could explain both short-term mood effects and potentially transgenerational impacts.
What This Study Doesn't Tell Us
Hypothesis-driven analysis cross-referencing two data sources. The overlap of cannabis-methylated genes and depression-associated genes does not prove causal connection. Different organisms and tissues may not predict human brain effects.
Questions This Raises
- ?Are these epigenetic changes reversible with cannabis cessation?
- ?Could CBD, which has antidepressant properties, produce different epigenetic profiles than THC?
Trust & Context
- Key Stat:
- Multiple depression genes epigenetically regulated by cannabis
- Evidence Grade:
- Novel bioinformatics analysis connecting two lines of evidence, but does not establish causation or prove clinical relevance.
- Study Age:
- Published in 2022
- Original Title:
- The Cannabis-Induced Epigenetic Regulation of Genes Associated with Major Depressive Disorder.
- Published In:
- Genes, 13(8) (2022)
- Authors:
- Mohammad, Guldar Sayed, Joca, Sâmia(2), Starnawska, Anna(2)
- Database ID:
- RTHC-04072
Evidence Hierarchy
Summarizes existing research on a topic.
What do these levels mean? →Frequently Asked Questions
Does cannabis cause epigenetic changes related to depression?
This study found that multiple genes associated with depression are epigenetically modified by cannabis exposure. These genes are involved in neuronal development and synaptic function, providing a potential molecular link between cannabis and depression.
What is epigenetic regulation?
Epigenetic changes alter how genes are expressed without changing the DNA sequence itself. Cannabis appears to change DNA methylation patterns on genes linked to depression, which could turn these genes up or down.
Read More on RethinkTHC
Cite This Study
https://rethinkthc.com/research/RTHC-04072APA
Mohammad, Guldar Sayed; Joca, Sâmia; Starnawska, Anna. (2022). The Cannabis-Induced Epigenetic Regulation of Genes Associated with Major Depressive Disorder.. Genes, 13(8). https://doi.org/10.3390/genes13081435
MLA
Mohammad, Guldar Sayed, et al. "The Cannabis-Induced Epigenetic Regulation of Genes Associated with Major Depressive Disorder.." Genes, 2022. https://doi.org/10.3390/genes13081435
RethinkTHC
RethinkTHC Research Database. "The Cannabis-Induced Epigenetic Regulation of Genes Associat..." RTHC-04072. Retrieved from https://rethinkthc.com/research/mohammad-2022-the-cannabisinduced-epigenetic-regulation
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkTHC research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.