How does bowel bacterial overgrowth affect irritable bowel syndrome (IBS)?

Updated: Dec 11, 2019
  • Author: Jenifer K Lehrer, MD; Chief Editor: BS Anand, MD  more...
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As discussed in Pathophysiology, Pimentel and colleagues have proposed that small bowel bacterial overgrowth provides a unifying mechanism for the common symptoms of bloating and gaseous distention in patients with irritable bowel syndrome. [18]

There is a relationship between the organisms that live in the intestine and the immune system, and this relationship is not yet fully understood. [17, 19]

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