Scientists discover how gut bacteria “train” the intestine to fight inflammation

A compound made when gut bacteria break down dietary fiber may do more than briefly calm inflammation—it could leave a lasting protective “memory” in the gut. Northwestern Medicine researchers found that butyrate can reprogram intestinal lining cells so they continue encouraging anti-inflammatory immune responses even after the compound is gone. In mice, this effect boosted production of the immune-calming molecule IL-10 and reduced the severity of colitis-like disease.

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