Patients with chronic gastrointestinal symptoms who used medical marijuana reported significant decreases in symptom severity at every time point over 12 months.
Patients with chronic GI conditions exploring medical cannabis; gastroenterologists considering cannabis as a therapeutic option.
Significant GI symptom improvement at all 4 time points over 12 months (p < 0.05)
What the researchers found
At each survey (baseline, 30 days, 6 months, 12 months), participants reported significantly lower GI symptom severity when using medical marijuana versus when not using it (p < 0.05 at every time point).
Why it matters
Chronic GI conditions like IBS and Crohn's disease are notoriously difficult to manage. This 12-month follow-up provides some of the first evidence that medical marijuana's benefits for GI symptoms persist over time rather than diminishing with continued use.
The numbers in context
Significant symptom severity decrease at all four time points (p < 0.05). Most common side effects: increased appetite (12-21.4%), fatigue (6-16.7%), anxiety (4-11.9%), cough (4-11.9%), headache (6-7.9%), dry mouth (4-7.1%).
How the study worked
Longitudinal observational study following medical marijuana patients who completed surveys at baseline, 30 days, 6 months, and 12 months. GI symptom severity was self-rated on a 1 (mild) to 3 (severe) scale. Side effects were also tracked.
What this study cannot tell us
Self-reported outcomes without a placebo control group make it impossible to separate the pharmacological effects of marijuana from placebo effects or natural symptom fluctuation. No standardized GI diagnosis was required for enrollment. The simple 3-point severity scale limits granularity.
How to read the evidence
Preliminary: longitudinal self-reported data over 12 months shows consistency, but lacks placebo control, objective measures, and specific diagnoses.
When this study was published
2024 study.
The bigger picture
The endocannabinoid system is densely distributed throughout the gut and plays a role in motility, inflammation, and pain signaling. These patient-reported improvements align with preclinical evidence that cannabinoids modulate gastrointestinal function through multiple pathways.
Questions still open
- Which specific GI conditions respond best to medical marijuana? Do different cannabis formulations (high-THC vs high-CBD vs balanced) produce different GI outcomes?
Common questions
Did the relief wear off over time?
What were the most common side effects?
Read the original research
Relief in Gastrointestinal Symptoms with Medical Marijuana Over 1 Year.
Medical cannabis and cannabinoids, 7(1), 80-85
Citation
Wallingford, Matthew P; Kelly, Erin L; Herens, Allison; Hanna, Daniel; Hajjar, Emily; Worster, Brooke. (2024). Relief in Gastrointestinal Symptoms with Medical Marijuana Over 1 Year.. Medical cannabis and cannabinoids, 7(1), 80-85. https://doi.org/10.1159/000538694
Explore the wider topic
- Cannabis and Your Cardiovascular System: Heart Risk, Stroke, and What the Research Shows
- Cannabis and Your Heart: What the Cardiovascular Research Shows
- Coughing Up Black Stuff After Quitting Weed: What It Means
- Lung Recovery After Quitting Weed: The Complete Timeline
- Weed and Your Lungs: Recovery Timeline After Quitting
- Quitting Weed as a Woman: Hormones, Cycles, and Recovery
- Cannabis, Weight, and Diet: What Quitting Does to Your Appetite
- Sex After Quitting Weed: What Changes and What Doesn't
- Cannabis and Driving: DUI Laws, Impairment Science, and What You Need to Know
- Weed and Acne: Can Quitting Cannabis Clear Your Skin?
- Weed and Fertility: What Couples Should Know
- Weed and Your Gut: How Cannabis Affects Digestion
- Weed and Your Heart: Cardiovascular Effects and Recovery
- Weed, Testosterone, and Male Health: What the Research Actually Shows
- Cannabis and IBS: Gut Health, Inflammation, and Symptom Relief
- Cannabis and Crohn's Disease: What Gastroenterology Research Shows