What does the evidence say about cannabis for inflammatory bowel disease?
A scoping review of six studies (three RCTs and three observational) found some promising signals for cannabis in IBD, including improved well-being and reduced symptom scores, but evidence remains too limited for firm conclusions.
Quick Facts
What This Study Found
Studies reported improvements in general well-being and Harvey-Bradshaw Index, enhanced health perception scores (4.1 to 7.0, p=0.0002), weight gain, CDAI scores below 150, and reduced clinical complications. However, only six studies met inclusion criteria, highlighting the scarcity of evidence.
Key Numbers
15-40% of IBD patients use cannabis; 3 RCTs + 3 observational studies included; health perception improved from 4.1 to 7.0 (p=0.0002); CDAI target: below 150
How They Did This
Scoping review following PRISMA guidelines. Searched for studies assessing clinical remission in IBD patients using cannabis. Only three randomized controlled trials and three observational studies satisfied selection criteria.
Why This Research Matters
An estimated 15-40% of IBD patients already use cannabis for symptom management. Despite widespread patient interest, the evidence base remains remarkably thin, with only six studies meeting basic quality thresholds.
The Bigger Picture
The gap between patient adoption and clinical evidence is striking. Many IBD patients are already using cannabis based on personal experience, but the research community has yet to produce the large-scale trials needed to guide clinical decisions.
What This Study Doesn't Tell Us
Only six studies met inclusion criteria. Heterogeneous study designs, cannabis formulations, and outcome measures. No meta-analysis possible due to study variability.
Questions This Raises
- ?What specific cannabis formulations and doses are most effective for IBD?
- ?Does cannabis work differently for Crohn's disease versus ulcerative colitis?
- ?Can cannabis achieve objective mucosal healing, not just symptom improvement?
Trust & Context
- Key Stat:
- 15-40% of IBD patients use cannabis
- Evidence Grade:
- Scoping review with only six included studies, heterogeneous designs, and no meta-analysis possible.
- Study Age:
- Published in 2021; additional trials may have been completed since.
- Original Title:
- Cannabis and Its Potential Protective Role Against Inflammatory Bowel Disease: A Scoping Review.
- Published In:
- Cureus, 13(10), e18841 (2021)
- Authors:
- Nso, Nso, Nyabera, Akwe, Nassar, Mahmoud, Alshamam, Mohsen S, Sumbly, Vikram, Vest, Mallorie, Patel, Nehal, Ojong, Gilbert, Rizzo, Vincent
- Database ID:
- RTHC-03388
Evidence Hierarchy
Maps out the available research on a broad question.
What do these levels mean? →Frequently Asked Questions
Does cannabis help with IBD?
Some studies report improved symptoms, well-being, and reduced complications, but the evidence base is too small (only 6 studies) to draw firm conclusions.
Why is there so little research?
Cannabis research has been limited by legal restrictions and funding barriers. The scoping review found that very few studies meet basic quality thresholds for studying cannabis in IBD.
What symptoms improved?
Studies reported improvements in general well-being, disease activity scores, health perception, weight gain, and reduced clinical complications, though results varied across studies.
Read More on RethinkTHC
- CBD-oil-quality-guide
- anxiety-medication-after-quitting-weed
- cannabis-chemotherapy-nausea
- cannabis-chronic-pain-research
- cannabis-epilepsy-CBD-Epidiolex
- cbd-anxiety-research-evidence
- cbd-for-weed-withdrawal
- cbd-vs-thc-difference
- medical-benefits-of-cannabis
- quitting-weed-before-surgery
- quitting-weed-medication-interactions
- quitting-weed-pregnancy
- quitting-weed-pregnant
- seniors-older-adults-cannabis-risks-medications
- weed-breastfeeding-THC-breast-milk
Cite This Study
https://rethinkthc.com/research/RTHC-03388APA
Nso, Nso; Nyabera, Akwe; Nassar, Mahmoud; Alshamam, Mohsen S; Sumbly, Vikram; Vest, Mallorie; Patel, Nehal; Ojong, Gilbert; Rizzo, Vincent. (2021). Cannabis and Its Potential Protective Role Against Inflammatory Bowel Disease: A Scoping Review.. Cureus, 13(10), e18841. https://doi.org/10.7759/cureus.18841
MLA
Nso, Nso, et al. "Cannabis and Its Potential Protective Role Against Inflammatory Bowel Disease: A Scoping Review.." Cureus, 2021. https://doi.org/10.7759/cureus.18841
RethinkTHC
RethinkTHC Research Database. "Cannabis and Its Potential Protective Role Against Inflammat..." RTHC-03388. Retrieved from https://rethinkthc.com/research/nso-2021-cannabis-and-its-potential
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.