This article is part of the IBD Index. Last updated on March 14, 2022.
Small intestinal bacterial overgrowth, or SIBO, is one area of research in the field of intestinal health that has gone from relative obscurity to almost totally mainstream just in the past decade. As research has progressed, the name “overgrowth” has become a bit of a misnomer, with recent evidence indicating that the issue isn’t bacterial overgrowth per se, but rather bacterial dysbiosis in the small intestine.
In any case, SIBO is often identified in patients with IBD*, and can both affect and be affected by other IBD-related disease processes. Therefore, the question of whether and how to treat it is highly relevant. While treatment of SIBO is certainly a lever one can pull that may affect symptoms and overall disease state, SIBO is also often a symptom of other dysfuctions and environmental factors, such that addressing those other factors could resolve the SIBO without explicit treatment. And because testing for and treating SIBO is often quite complicated, it’s best to take it in context and consider whether there are other “no-brainer” levers that could be pulled first.
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