Malouff, John M, Thorsteinsson, Einar B, Rooke, Sally E et al. · Clinical psychology review · 2008 · DOI
This study reviewed 15 previous research studies on whether cognitive behavioral therapy (CBT)—a type of talk therapy focused on thoughts and behaviors—helps people with chronic fatigue syndrome. Overall, people who received CBT showed moderate improvement in fatigue compared to those who didn't receive it. About half of the people who completed CBT no longer met the clinical criteria for severe fatigue, though some people dropped out of treatment.
This synthesis provides evidence that CBT can produce measurable improvements in fatigue for some CFS patients, informing treatment options. However, the moderate effect size and wide variability in outcomes highlight that CBT is not universally effective, emphasizing the need for personalized treatment approaches and continued research into who benefits most.
This meta-analysis cannot establish causation or determine whether CBT's effects are specific to the intervention or partly attributable to placebo, natural recovery, or other therapeutic factors. The moderate effect size does not prove CBT works for all patients, and individual patient responses vary considerably. High dropout rates suggest CBT may not be tolerable or acceptable for all CFS patients.
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 →
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