Cannabis shows promise for cancer symptom management but evidence gaps persist
Cannabis has reasonable evidence for treating nausea, vomiting, appetite loss, and pain in cancer patients, with promising but limited data for neuropathy, GI distress, and sleep problems.
Quick Facts
What This Study Found
The review found reasonable evidence to consider cannabis for nausea/vomiting, appetite loss, and pain as supplemental treatment. Promising but insufficient evidence exists for chemotherapy-induced peripheral neuropathy, GI distress, and sleep disorders. Evidence for cognitive impairment, anxiety, depression, and fatigue remains scant.
Key Numbers
The review assessed cannabis evidence across at least nine symptom categories in cancer patients, finding reasonable evidence for three (nausea/vomiting, appetite loss, pain) and promising evidence for three more (neuropathy, GI distress, sleep).
How They Did This
Literature review across cancer, HIV, multiple sclerosis, IBD, PTSD, and other fields to inform cannabis use in cancer supportive and palliative care.
Why This Research Matters
Cancer patients are among the highest-use populations for medical cannabis, yet oncologists often lack guidance on what cannabis can and cannot do for their patients' symptoms.
The Bigger Picture
By pulling evidence from multiple disease contexts, this review builds a more complete picture of cannabis's potential in cancer care than studies limited to oncology alone. The multifaceted symptom relief potential is notable for patients dealing with multiple concurrent symptoms.
What This Study Doesn't Tell Us
Narrative review without systematic search methodology. Draws on evidence from non-cancer populations which may not directly translate. Cannabis preparation and dosing varied widely across included studies.
Questions This Raises
- ?Which cannabis formulations and delivery methods are best suited for specific cancer symptoms?
- ?Can cannabis reduce the polypharmacy burden that many cancer patients face?
Trust & Context
- Key Stat:
- 3 symptoms with reasonable evidence
- Evidence Grade:
- Moderate: broad review across multiple conditions, but narrative rather than systematic.
- Study Age:
- Published in 2019.
- Original Title:
- Opportunities for cannabis in supportive care in cancer.
- Published In:
- Therapeutic advances in medical oncology, 11, 1758835919866362 (2019)
- Authors:
- Kleckner, Amber S, Kleckner, Ian R, Kamen, Charles S, Tejani, Mohamedtaki A, Janelsins, Michelle C, Morrow, Gary R, Peppone, Luke J
- Database ID:
- RTHC-02110
Evidence Hierarchy
Summarizes existing research without a strict systematic method.
What do these levels mean? →Frequently Asked Questions
What cancer symptoms does cannabis help with most?
The strongest evidence supports cannabis for nausea and vomiting, loss of appetite, and pain in cancer patients.
Can cannabis help with chemo-induced neuropathy?
Promising evidence exists, but the research is too limited to make firm recommendations at this time.
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Cite This Study
https://rethinkthc.com/research/RTHC-02110APA
Kleckner, Amber S; Kleckner, Ian R; Kamen, Charles S; Tejani, Mohamedtaki A; Janelsins, Michelle C; Morrow, Gary R; Peppone, Luke J. (2019). Opportunities for cannabis in supportive care in cancer.. Therapeutic advances in medical oncology, 11, 1758835919866362. https://doi.org/10.1177/1758835919866362
MLA
Kleckner, Amber S, et al. "Opportunities for cannabis in supportive care in cancer.." Therapeutic advances in medical oncology, 2019. https://doi.org/10.1177/1758835919866362
RethinkTHC
RethinkTHC Research Database. "Opportunities for cannabis in supportive care in cancer." RTHC-02110. Retrieved from https://rethinkthc.com/research/kleckner-2019-opportunities-for-cannabis-in
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.