Bell, D S · Postgraduate medicine · 1994
This review examines what causes ME/CFS and finds that common viruses like Epstein-Barr virus are likely not responsible. Instead, the evidence points to problems in the central nervous system—the brain and spinal cord—as a key factor in ME/CFS. Researchers found multiple abnormalities related to how the brain regulates hormones, processes chemicals, and controls blood flow, which may explain why patients experience fatigue and other symptoms.
This study was foundational in shifting the scientific understanding of ME/CFS from a purely viral or psychiatric condition toward recognition of measurable neurobiological dysfunction. By consolidating evidence of CNS involvement, it helped establish a more credible biological basis for the disease, supporting the need for neurological research approaches and validating patients' experiences of real physiological dysfunction.
This review does not prove causation—it identifies correlations and abnormalities but does not demonstrate that CNS dysfunction directly causes ME/CFS symptoms or establish the sequence of events. It also cannot rule out that CNS changes might be secondary to other unknown primary processes. The proposal regarding novel retroviruses remains speculative and required further investigation.
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 →
Contribute
Private, reviewed by a human. Not a public comment thread.