Aschbacher, Kirstin, Adam, Emma K, Crofford, Leslie J et al. · Brain, behavior, and immunity · 2012 · DOI
This study examined how the body's stress-response system (the HPA axis) works differently in people with ME/CFS and fibromyalgia compared to healthy people. Researchers measured stress hormones (cortisol and ACTH) every 10 minutes for 24 hours and used computer modeling to understand each person's unique hormone patterns. They found that nighttime hormone patterns were different in patients versus healthy controls, and these patterns were linked to symptoms like pain, fatigue, and poor sleep.
Understanding HPA axis dysfunction in ME/CFS and fibromyalgia is critical because these hormones regulate inflammation, sleep, and energy metabolism—all disrupted in these conditions. This personalized, mechanistic approach offers a framework for identifying biological subtypes and potentially tailoring treatments to individual HPA profiles rather than using one-size-fits-all approaches.
This study does not prove that HPA dysfunction causes ME/CFS or fibromyalgia—correlation does not establish causation. The small sample and cross-sectional design mean findings require replication and cannot determine whether altered HPA patterns are primary drivers or consequences of illness. The significance of the proposed compensatory cortisol response remains speculative.
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
Aschbacher, Kirstin, Adam, Emma K, Crofford, Leslie J, Kemeny, Margaret E, Demitrack, Mark A, & Ben-Zvi, Amos (2012). Linking disease symptoms and subtypes with personalized systems-based phenotypes: a proof of concept study.. Brain, behavior, and immunity. https://doi.org/10.1016/j.bbi.2012.06.002
BibTeX
@article{mecfsatlas-aschbacher-2012-linking-disease,
author = {Aschbacher, Kirstin and Adam, Emma K and Crofford, Leslie J and Kemeny, Margaret E and Demitrack, Mark A and Ben-Zvi, Amos},
title = {Linking disease symptoms and subtypes with personalized systems-based phenotypes: a proof of concept study.},
journal = {Brain, behavior, and immunity},
year = {2012},
doi = {10.1016/j.bbi.2012.06.002},
note = {PubMed: 22687333},
url = {https://www.mecfsatlas.com/evidence/aschbacher-2012-linking-disease},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-30. https://www.mecfsatlas.com/evidence/aschbacher-2012-linking-disease
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