Broderick, Gordon, Ben-Hamo, Rotem, Vashishtha, Saurabh et al. · Brain, behavior, and immunity · 2013 · DOI
This study looked at how the immune systems of Gulf War veterans respond to exercise compared to healthy people and those with ME/CFS. Researchers drew blood before, during peak exercise, and 4 hours after exercise, then analyzed gene activity and immune markers. They found that Gulf War Illness involves an exaggerated immune and stress response to exercise, while ME/CFS showed the opposite pattern with a dampened immune response.
This study provides mechanistic insight into how ME/CFS differs from similar post-infectious conditions like Gulf War Illness, suggesting distinct immune dysregulation patterns. Understanding these pathway-level differences could help explain why ME/CFS patients often deteriorate with exercise and inform development of condition-specific treatments rather than generic immune therapies.
This exploratory analysis does not establish causation—altered pathways may be consequences rather than causes of illness. The very small ME/CFS sample (n=7) limits conclusions about ME/CFS-specific mechanisms. The study cannot determine whether these immune changes cause symptoms or simply correlate with them.
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 →
The first block is for the primary paper and is the citation you should use in research work. The atlas-snapshot line only applies if you are specifically referring to this atlas’s reading of the paper on the date shown.
Primary citation
Broderick, Gordon, Ben-Hamo, Rotem, Vashishtha, Saurabh, Efroni, Sol, Nathanson, Lubov, Barnes, Zachary, et al. (2013). Altered immune pathway activity under exercise challenge in Gulf War Illness: an exploratory analysis.. Brain, behavior, and immunity. https://doi.org/10.1016/j.bbi.2012.11.007
BibTeX
@article{mecfsatlas-broderick-2013-altered-immune,
author = {Broderick, Gordon and Ben-Hamo, Rotem and Vashishtha, Saurabh and Efroni, Sol and Nathanson, Lubov and Barnes, Zachary and Fletcher, Mary Ann and Klimas, Nancy},
title = {Altered immune pathway activity under exercise challenge in Gulf War Illness: an exploratory analysis.},
journal = {Brain, behavior, and immunity},
year = {2013},
doi = {10.1016/j.bbi.2012.11.007},
note = {PubMed: 23201588},
url = {https://www.mecfsatlas.com/evidence/broderick-2013-altered-immune},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-26. https://www.mecfsatlas.com/evidence/broderick-2013-altered-immune
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