The Updated NICE Guidance Exposed the Serious Flaws in CBT and Graded Exercise Therapy Trials for ME/CFS.

Observed Findings

• - Multiple published trials supporting CBT and GET contained inadequately designed control groups that did not properly control for natural recovery or placebo effects
• - Primary outcomes in these studies relied heavily on subjective self-reported measures in non-blinded designs, creating potential for response bias
• - Some trials included participants who did not meet ME/CFS diagnostic criteria or had self-limiting conditions, compromising applicability
• - Selective reporting and outcome switching were identified, including post-hoc changes to recovery definitions
• - Despite methodological flaws favouring the interventions, objective improvements in patient outcomes were not demonstrated

Inferred Conclusions

• - The evidence base previously cited to support CBT and GET effectiveness contains fundamental methodological flaws that biased results toward positive outcomes
• - The absence of objective improvement in even flawed studies suggests these interventions lack true efficacy for ME/CFS
• - The NICE 2021 decision to remove CBT and GET as curative treatments is supported by critical analysis of the underlying evidence
• - Future ME/CFS research should prioritize rigorous methodology with objective outcome measures and appropriate patient populations

Remaining Questions