Maes, Michael, Mihaylova, Ivanka, Kubera, Marta et al. · Journal of affective disorders · 2010 · DOI
This study found that people with depression have higher levels of harmful molecules called peroxides and antibodies to oxidized cholesterol in their blood compared to healthy people. These markers suggest that depression involves increased oxidative stress—a type of cellular damage. Because these same markers are linked to heart disease and brain degeneration, the findings suggest depression may increase risk for these serious conditions through shared biological pathways.
ME/CFS patients often experience depression and overlapping somatic symptoms. Understanding shared oxidative stress mechanisms between depression and ME/CFS could reveal common pathways contributing to both conditions and their associated complications like cardiovascular and neurological involvement. This work supports investigating IO&NS pathology as a potential therapeutic target across these conditions.
This study does not prove that oxidative stress causes depression or its complications—it only shows association. The cross-sectional design cannot establish temporal relationships or causality. The findings in depression patients do not directly establish whether the same mechanisms operate in ME/CFS, which requires separate investigation.
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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