Back when I had UC, I did a lot of research on this topic of how medical marijuana interacts with the intestine and ulcerative colitis. This is all about IBD and not necessarily the J-pouch, but some of it might still be applicable. Here is what I found...
There are studies that show that medical marijuana not only helps symptoms but also actively treats inflammatory bowel disease, often better than prescription medications (see links below).
Medical marijuana acts on Crohn's and Ulcerative Colitis in four major ways:
1) It reduces inflammation (anti-inflammatory properties).
2) It actually interacts with the cannabinoid receptors on the intestinal wall, promoting and helping to rebuild healthy mucosal membrane.
3) It relaxes intestinal muscles, reducing the cramping and and spasms that cause diarrhea, in turn causing less stress on the GI tract (which worsens the disease).
4) It reduces stress (which triggers the disease) and helps treat physical pain and mental anguish.
Check out these articles (I cut and pasted the important quotes here if you don't want to read the whole article), especially the testimonies and personal stories in the last two links.
News-Medical.net: "Chemicals found in cannabis could prove an effective treatment for the inflammatory bowel diseases Ulcerative Colitis and Crohn's Disease, say scientists. Laboratory tests have shown that two compounds found in the cannabis plant - the cannabinoids THC and cannabidiol - interact with the body's system that controls gut function."
National Institute of Health: "Cannibinoids Cool the Intestine... Although the mechanisms underlying ulcerative colitis and Crohn's disease are different, they share one pathological feature: chronic inflammation. In a recent issue of the Journal of Clinical Investigation, Massa et al. provide evidence that stimulation of cannabinoid receptors protects against colonic inflammation3."
Israel Medical Association Journal: Cannabis use is associated with a reduction in Crohn's disease (CD) activity and disease-related surgeries, according to the results of a retrospective observational study published in the August issue of the Journal of the Israeli Medical Association. Investigators at the Meir Medical Center, Institute of Gastroenterology and Hepatology assessed 'disease activity, use of medication, need for surgery, and hospitalization' before and after cannabis use in 30 patients with CD. Authors reported, "All patients stated that consuming cannabis had a positive effect on their disease activity" and documented "significant improvement" in 21 subjects. Specifically, researchers found that subjects who consumed cannabis "significantly reduced" their need for other medications. Participants in the trial also reported requiring fewer surgeries following their use of cannabis. Fifteen of the patients had 19 surgeries during an average period of nine years before cannabis use, but only two required surgery during an average period of three years of cannabis use," authors reported."
I Have Ulcerative Colitis: The blog itself is just a guy wondering about whether it works, but read all of the responses below it...
Legal Marijuana: Check out the quotes and testimonies in this article.