Review highlights safety concerns for cannabis users: mood, suicidality, heart effects, and drug interactions
A narrative review outlines four key safety concerns for cannabis users: effects on mood symptoms, associations with suicidal ideation, cardiovascular effects, and drug interactions, arguing that healthcare professionals need to be more aware of these risks as legalization expands.
Quick Facts
What This Study Found
The review identifies four major safety domains: (1) cannabis effects on mood symptoms beyond the well-known psychoactive effects, (2) associations with suicidal ideation that are still being uncovered, (3) cardiovascular system effects that extend beyond the central nervous system, and (4) clinically significant drug interactions that may affect patients on other medications.
Key Numbers
Four safety domains reviewed: mood symptoms, suicidality, cardiovascular effects, drug interactions. Cannabis is the most used federally illicit substance in the US.
How They Did This
Narrative review synthesizing current evidence on cannabis safety across four domains: mood effects, suicidality, cardiovascular effects, and drug interactions, aimed at informing healthcare professionals as legal access expands.
Why This Research Matters
With an increasing number of US states authorizing cannabis use, many healthcare providers lack knowledge about these safety concerns. This review provides a practical overview of risks that clinicians need to consider when caring for patients who use cannabis.
The Bigger Picture
The review highlights a critical gap: cannabis is widely used but its safety profile remains poorly characterized compared to other medications. The cardiovascular and drug interaction concerns are particularly underpublicized, as most public discourse focuses on psychoactive and addiction-related effects.
What This Study Doesn't Tell Us
Narrative review without systematic methodology. Does not quantify the magnitude of each risk. May not capture the most recent evidence in rapidly evolving fields. Does not differentiate between THC and CBD safety profiles in detail.
Questions This Raises
- ?What are the most clinically significant drug interactions with cannabis?
- ?Is the cardiovascular risk dose-dependent?
- ?How should clinicians screen for and communicate these risks to patients?
Trust & Context
- Key Stat:
- Four major safety domains: mood, suicidality, cardiovascular effects, and drug interactions
- Evidence Grade:
- Narrative review aimed at clinical education, synthesizing multiple evidence sources without systematic methodology.
- Study Age:
- Published in 2025.
- Original Title:
- Safety considerations for patients using cannabis.
- Published In:
- The mental health clinician, 15(6), 267-274 (2025)
- Authors:
- Dugan, Sara E
- Database ID:
- RTHC-06375
Evidence Hierarchy
Summarizes existing research on a topic.
What do these levels mean? →Frequently Asked Questions
What cardiovascular risks does cannabis carry?
The review notes that cannabinoids have effects outside the central nervous system, including on the cardiovascular system. These effects are still being fully characterized but represent an emerging safety concern.
Does cannabis interact with other medications?
Yes. Cannabis components, particularly CBD, can affect liver enzymes that metabolize many common medications, potentially altering their blood levels and effectiveness. This is an underrecognized concern for patients on multiple medications.
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Cite This Study
https://rethinkthc.com/research/RTHC-06375APA
Dugan, Sara E. (2025). Safety considerations for patients using cannabis.. The mental health clinician, 15(6), 267-274. https://doi.org/10.9740/mhc.2025.12.267
MLA
Dugan, Sara E. "Safety considerations for patients using cannabis.." The mental health clinician, 2025. https://doi.org/10.9740/mhc.2025.12.267
RethinkTHC
RethinkTHC Research Database. "Safety considerations for patients using cannabis." RTHC-06375. Retrieved from https://rethinkthc.com/research/dugan-2025-safety-considerations-for-patients
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.