Nijhof, Sanne L, Bleijenberg, Gijs, Uiterwaal, Cuno S P M et al. · Lancet (London, England) · 2012 · DOI
Researchers tested an internet-based program called FITNET designed specifically for teenagers with chronic fatigue syndrome (ME/CFS). Compared to standard care alone, teenagers who used FITNET showed much better outcomes at 6 months: 75% returned to full school attendance (versus only 16% in usual care), 85% had less severe fatigue (versus 27%), and 78% reported normal physical functioning (versus 20%). No serious side effects were reported.
This study demonstrates that internet-based cognitive behavioural therapy can be an accessible, effective treatment for adolescents with ME/CFS, addressing a major barrier to care—the scarcity of specialists. The large effect sizes and multi-domain improvements (school, fatigue, function) suggest FITNET could be scalable across healthcare systems. For patients, it validates that evidence-based psychological approaches can improve outcomes in this disabling condition.
This study does not prove that CBT 'cures' ME/CFS or that fatigue is primarily psychological in origin; it shows that a structured behavioural intervention helps manage symptoms and disability. The open-label design cannot exclude placebo effects or expectancy bias. It also does not establish whether improvements are maintained long-term beyond the 6-month follow-up period.
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
Nijhof, Sanne L, Bleijenberg, Gijs, Uiterwaal, Cuno S P M, Kimpen, Jan L L, & van de Putte, Elise M (2012). Effectiveness of internet-based cognitive behavioural treatment for adolescents with chronic fatigue syndrome (FITNET): a randomised controlled trial.. Lancet (London, England). https://doi.org/10.1016/S0140-6736(12)60025-7
BibTeX
@article{mecfsatlas-nijhof-2012-effectiveness-internet,
author = {Nijhof, Sanne L and Bleijenberg, Gijs and Uiterwaal, Cuno S P M and Kimpen, Jan L L and van de Putte, Elise M},
title = {Effectiveness of internet-based cognitive behavioural treatment for adolescents with chronic fatigue syndrome (FITNET): a randomised controlled trial.},
journal = {Lancet (London, England)},
year = {2012},
doi = {10.1016/S0140-6736(12)60025-7},
note = {PubMed: 22385683},
url = {https://www.mecfsatlas.com/evidence/nijhof-2012-effectiveness-internet},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-29. https://www.mecfsatlas.com/evidence/nijhof-2012-effectiveness-internet
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