NCI workshop finds conclusive evidence for cannabis treating chemo nausea but notes significant risks for cancer patients
A National Cancer Institute workshop found conclusive evidence that cannabinoids help chemotherapy-induced nausea and suggestive evidence for cancer pain, while highlighting underappreciated risks including infections, drug interactions, and vaping-related illness.
Quick Facts
What This Study Found
Conclusive evidence supports cannabinoids for chemotherapy-induced nausea and vomiting, with suggestive evidence for cancer-related pain. Risks for cancer patients include infection (immunocompromised), pharmacokinetic drug-botanical interactions, cannabinoid hyperemesis syndrome, and vaping-related lung injury.
Key Numbers
Cannabis remains Schedule I federally; conclusive evidence for chemo nausea; suggestive evidence for cancer pain; risks include infection, drug interactions, hyperemesis, vaping injury
How They Did This
Summary of Session 2 from the National Cancer Institute Cannabis, Cannabinoids, and Cancer Research Workshop, including patient testimony, legal landscape review, and evidence synthesis.
Why This Research Matters
Cancer patients are using cannabis at increasing rates while oncologists feel ill-equipped to advise them. The gap between patient demand and clinical guidance creates real risks, especially for immunocompromised patients.
The Bigger Picture
The NCI workshop highlights a paradox: cannabis has legitimate uses in cancer care but the Schedule I classification makes it nearly impossible to conduct the research needed to guide its use safely.
What This Study Doesn't Tell Us
Workshop summary rather than systematic review. Evidence synthesis is necessarily broad rather than detailed. Legal barriers continue to limit research quality and quantity.
Questions This Raises
- ?How can oncologists be better trained to counsel patients about cannabis?
- ?Would rescheduling cannabis accelerate the research needed for evidence-based cancer care guidelines?
- ?Which drug-cannabis interactions pose the greatest risk for cancer patients?
Trust & Context
- Key Stat:
- Conclusive evidence for chemotherapy-induced nausea, suggestive evidence for cancer pain
- Evidence Grade:
- NCI expert workshop summary synthesizing available evidence across cancer-related cannabinoid research
- Study Age:
- Published in 2021. The conflict between federal scheduling and state medical cannabis laws continues to hamper research.
- Original Title:
- Cannabis and the Cancer Patient.
- Published In:
- Journal of the National Cancer Institute. Monographs, 2021(58), 68-77 (2021)
- Authors:
- Braun, Ilana M(3), Abrams, Donald I(6), Blansky, Stacey E, Pergam, Steven A
- Database ID:
- RTHC-03024
Evidence Hierarchy
Summarizes existing research on a topic.
What do these levels mean? →Frequently Asked Questions
Can cannabis help cancer patients?
There is conclusive evidence that cannabinoids reduce chemotherapy-induced nausea and vomiting, and suggestive evidence for cancer-related pain. However, there are also significant risks for immunocompromised patients.
What are the risks of cannabis for cancer patients?
Key risks include infection (for immunocompromised patients), drug interactions with cancer treatments, cannabinoid hyperemesis syndrome, vaping-related lung injury, and the lack of quality-controlled products.
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Cite This Study
https://rethinkthc.com/research/RTHC-03024APA
Braun, Ilana M; Abrams, Donald I; Blansky, Stacey E; Pergam, Steven A. (2021). Cannabis and the Cancer Patient.. Journal of the National Cancer Institute. Monographs, 2021(58), 68-77. https://doi.org/10.1093/jncimonographs/lgab012
MLA
Braun, Ilana M, et al. "Cannabis and the Cancer Patient.." Journal of the National Cancer Institute. Monographs, 2021. https://doi.org/10.1093/jncimonographs/lgab012
RethinkTHC
RethinkTHC Research Database. "Cannabis and the Cancer Patient." RTHC-03024. Retrieved from https://rethinkthc.com/research/braun-2021-cannabis-and-the-cancer
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.