http://www.medicalnewstoday.com/articles/101182.php(snip...) The exact pathogenesis in inflammatory bowel disease (IBD) is poorly understood, but evidence exists that IBD involves interactions between immune system, genetic susceptibility and the environment. In IBDs, the intestinal mucosal barrier is disrupted by inflammation and ulceration. In these circumstances, translocation of enteric bacteria and their products through the bowel wall to extra-intestinal sterile sites may result. Bacterial translocation may cause secondary infection of intra-abdominal inflammatory processes, such as intra-abdominal abscesses, or peritonitis. Recent studies have, however, shown the important role of anti-inflammatory and antioxidant agents, including melatonin, in IBDs. (...more)
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There was also a piece about anti-gluten diet and RA. Anti-gluten being beneficial to RA patients. More kudos to Ebringer...

Molly