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ME/CFS Science @mecfsscience.org · 07/08/2026

6) Suspect this is reversing causality; severe illness is causing less light and more darkness, not the other way around. There was already a small RCT of bright light therapy for ME/CFS, and it found no effect. Link:

sciencedirect.com

Assessing fatigue in myalgic encephalomyelitis/chronic fatigue syndrome patients before and after treatment with bright light therapy: A prospective randomized controlled crossover study

The aim of the current study was to test the effectiveness of treatment with bright light therapy (BLT) on fatigue and cognitive function in patients …

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ME/CFS Science @mecfsscience.org · 07/08/2026

7) Link to the Spanish study: Cambras et al. 2026. Association between light exposure patterns and multidimensional health outcomes in individuals with myalgic encephalomyelitis/chronic fatigue syndrome...

link.springer.com

Association between light exposure patterns and multidimensional health outcomes in individuals with myalgic encephalomyelitis/chronic fatigue syndrome: findings from an observational cross-sectional cohort study

Journal of Translational Medicine - Light is a major environmental factor regulating circadian rhythms, sleep- wake cycles, and mood-related behaviors. Patients with Myalgic...

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calltobase.bsky.social @calltobase.bsky.social · 07/08/2026

Correlation is not causation. The sicker you are, the less time you’re likely to spend out in the sun, especially in a light sensitive cohort of patients. This seems like nothing at all. Sun exposure therapy is a sick joke and will only contribute to crashes. SMH.

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