Maes, Michael, Twisk, Frank N M · BMC medicine · 2010 · DOI
This study compares two different ways of understanding ME/CFS. One model suggests the illness is mainly caused by how the mind and behavior interact with the body, and proposes treatments like cognitive behavioral therapy and graded exercise. The other model focuses on biological problems like inflammation and oxidative stress in the body. The authors argue that the biological model better explains ME/CFS and that exercise-based treatments could actually make some patients worse.
This study is important because it directly challenges the evidence base for widely prescribed ME/CFS treatments (CBT and GET) and proposes that focusing on measurable biological mechanisms like inflammation could lead to safer, more effective clinical approaches. For patients, it validates concerns that exercise-based therapies may worsen their condition and advocates for laboratory testing to understand individual biological abnormalities.
This paper does not prove that CBT or GET are harmful to all ME/CFS patients—it raises concerns based on theoretical considerations but does not present clinical trial data showing harm. It also does not establish that IO&NS pathways are the primary or sole cause of ME/CFS, nor does it provide direct evidence that current behavioral interventions actually intensify these biological pathways. As a review article, it presents an alternative interpretation of existing evidence rather than new empirical findings.
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
Maes, Michael & Twisk, Frank N M (2010). Chronic fatigue syndrome: Harvey and Wessely's (bio)psychosocial model versus a bio(psychosocial) model based on inflammatory and oxidative and nitrosative stress pathways.. BMC medicine. https://doi.org/10.1186/1741-7015-8-35
BibTeX
@article{mecfsatlas-maes-2010-chronic-fatigue,
author = {Maes, Michael and Twisk, Frank N M},
title = {Chronic fatigue syndrome: Harvey and Wessely's (bio)psychosocial model versus a bio(psychosocial) model based on inflammatory and oxidative and nitrosative stress pathways.},
journal = {BMC medicine},
year = {2010},
doi = {10.1186/1741-7015-8-35},
note = {PubMed: 20550693},
url = {https://www.mecfsatlas.com/evidence/maes-2010-chronic-fatigue},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-26. https://www.mecfsatlas.com/evidence/maes-2010-chronic-fatigue
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