Meeus, Mira, Mistiaen, Wilhelm, Lambrecht, Luc et al. · Anticancer research · 2009
This research review compares immune system abnormalities found in both cancer and ME/CFS, focusing on whether similar immune problems might explain why both conditions cause severe fatigue. The authors identified several immune dysfunctions that appear in both diseases—including problems with natural killer cells, abnormal inflammatory signaling, and increased cellular stress—and suggest these shared immune problems may contribute to the fatigue experienced by patients with either condition.
This review highlights potential biological mechanisms shared between ME/CFS and cancer that could explain fatigue in both conditions, offering a novel perspective on understanding ME/CFS pathophysiology. Identifying common immune pathways may guide future research into targeted treatments and validate that ME/CFS fatigue has a biological basis similar to fatigue in other serious illnesses.
This literature review cannot establish causation between specific immune dysfunctions and fatigue—it identifies correlations and proposes hypothetical mechanisms requiring experimental validation. The review does not prove that the same immune abnormalities operate identically in both diseases, nor does it demonstrate that correcting these immune problems would resolve fatigue. The study's reliance on published literature means conclusions are only as strong as existing evidence, which the authors note is limited for cancer-related fatigue.
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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