Li, Jie, Chen, Tailin · Experimental gerontology · 2025 · DOI
This study used genetic data to investigate whether past Epstein-Barr virus (EBV) infection might cause frailty and fatigue. Researchers found that certain antibodies produced in response to EBV were associated with increased frailty and fatigue symptoms in a way that suggests the virus may play a causal role. These findings suggest EBV's connection to these conditions may be worth exploring further for treatment options.
ME/CFS patients often report symptom onset following EBV infection, but the mechanistic link remains unclear. This study provides genetic evidence supporting a causal pathway between EBV and fatigue/frailty, which could justify further research into virus-targeted interventions and help validate patient experiences of post-viral illness.
This study does not prove that EBV infection directly causes ME/CFS in individual patients, nor does it establish that treating EBV will cure fatigue or frailty. Genetic associations at population level do not confirm individual clinical causation, and the study uses antibody markers as proxies for infection status rather than measuring active viral replication. The findings describe associations in general populations, not necessarily in people diagnosed with ME/CFS specifically.
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
Li, Jie & Chen, Tailin (2025). Epstein-Barr virus and the origin of frailty and fatigue: A two-sample multivariable bidirectional Mendelian randomization study.. Experimental gerontology. https://doi.org/10.1016/j.exger.2025.112860
BibTeX
@article{mecfsatlas-li-2025-epstein-barr,
author = {Li, Jie and Chen, Tailin},
title = {Epstein-Barr virus and the origin of frailty and fatigue: A two-sample multivariable bidirectional Mendelian randomization study.},
journal = {Experimental gerontology},
year = {2025},
doi = {10.1016/j.exger.2025.112860},
note = {PubMed: 40803495},
url = {https://www.mecfsatlas.com/evidence/li-2025-epstein-barr},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-28. https://www.mecfsatlas.com/evidence/li-2025-epstein-barr
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