Lakhan, Shaheen E, Kirchgessner, Annette · Nutrition & metabolism · 2010 · DOI
Many ME/CFS patients experience gut problems similar to irritable bowel syndrome. This review discusses how three interconnected gut issues—changes in the bacteria that live in your intestines, a weakened intestinal lining, and an altered immune response in the gut—may contribute to ME/CFS. The authors suggest that treatments like probiotics (beneficial bacteria) might help by restoring healthy gut bacteria and reducing inflammation.
This study highlights a plausible mechanistic pathway linking gut dysfunction—a common complaint in ME/CFS—to the disease process itself, rather than treating GI symptoms as separate from the core illness. Understanding these connections may open new avenues for symptom management and potentially disease modification through microbiota-targeted therapies.
This is a narrative review, not an experimental study, so it does not provide direct evidence that microbiota alterations, barrier dysfunction, or immune dysregulation actually cause ME/CFS symptoms. The review cannot establish causation or determine whether gut changes are primary drivers of ME/CFS or secondary consequences of the disease. Importantly, no clinical trial data are presented demonstrating that probiotics effectively treat ME/CFS.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
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