Castro-Marrero, Jesús, Zaragozá, Maria Cleofé, Domingo, Joan Carles et al. · Prostaglandins, leukotrienes, and essential fatty acids · 2018 · DOI
This study measured omega-3 fatty acid levels in the blood of 31 ME/CFS patients and found that nearly all of them (92.6%) had unusually low levels. Omega-3 fatty acids are important for heart health and reducing inflammation in the body. The researchers suggest that increasing omega-3 levels in ME/CFS patients might be worth testing as a potential treatment.
This is the first study documenting systematically low omega-3 fatty acid status in ME/CFS patients, suggesting a potential metabolic abnormality that could contribute to cardiovascular risk and inflammation—two concerns in this population. The findings raise the possibility that omega-3 supplementation could be investigated as a therapeutic intervention for ME/CFS.
This study does not establish that low omega-3 causes ME/CFS symptoms or that omega-3 supplementation will improve fatigue, sleep, or other ME/CFS symptoms. The cross-sectional design only shows association, not causation. Without a control group of healthy individuals, we cannot confirm whether this low omega-3 status is specific to ME/CFS or reflects broader dietary patterns in the population studied.
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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