Magnesium status and parameters of the oxidant-antioxidant balance in patients with chronic fatigue: effects of supplementation with magnesium. — ME/CFS Atlas
E2 ModerateModerate confidencePEM not requiredObservationalPeer-reviewedReviewed
Standard · 3 min
Magnesium status and parameters of the oxidant-antioxidant balance in patients with chronic fatigue: effects of supplementation with magnesium.
Manuel y Keenoy, B, Moorkens, G, Vertommen, J et al. · Journal of the American College of Nutrition · 2000 · DOI
Quick Summary
This study looked at whether magnesium deficiency and oxidative stress (cellular damage from unstable molecules) are connected in people with chronic fatigue. Researchers tested 93 patients, about half of whom had CFS, and found that people lacking magnesium had lower antioxidant protection in their blood. When these patients took magnesium supplements, some improved antioxidant markers and vitamin E levels, suggesting magnesium may help protect cells from damage.
Why It Matters
Magnesium deficiency and oxidative stress have both been proposed as contributing factors in ME/CFS pathology. This study provides evidence that magnesium supplementation may improve antioxidant markers in chronically fatigued patients, suggesting a potential mechanism by which correcting magnesium deficiency could be beneficial. Understanding the relationship between magnesium status and cellular protection is relevant for evaluating supplementation as a therapeutic approach in ME/CFS.
Observed Findings
47% of chronic fatigue patients were magnesium deficient, with significantly lower total antioxidant capacity in plasma compared to magnesium-sufficient patients (p=0.007)
Patients whose magnesium body stores did not improve after supplementation maintained persistently lower blood glutathione levels (p=0.003)
Magnesium supplementation improved serum vitamin E levels and the velocity of lipid peroxidation formation in responders (p<0.001)
Serum vitamin E correlated with dietary magnesium intake
In vitro lipid peroxidation susceptibility did not correlate with magnesium status or supplementation response
Inferred Conclusions
Moderate magnesium deficiency is associated with reduced antioxidant capacity in chronically fatigued patients, independent of dietary magnesium intake alone
Magnesium supplementation can improve antioxidant defenses (vitamin E and lipid peroxidation markers) in patients whose body magnesium stores are corrected
The relationship between magnesium status and oxidative stress in chronic fatigue may involve vitamin E availability and metabolism
Remaining Questions
Does improving antioxidant markers through magnesium supplementation lead to reduced fatigue symptoms or improved functioning in ME/CFS patients?
What This Study Does Not Prove
This study does not prove that magnesium deficiency causes ME/CFS or that supplementation will improve fatigue symptoms or functional outcomes. The observational design without a control group cannot establish causality, and improvement in antioxidant markers does not necessarily translate to clinical benefit. The study also does not determine optimal dosing or identify which patients are most likely to respond.
Tags
Symptom:Fatigue
Biomarker:Blood Biomarker
Method Flag:Weak Case DefinitionNo ControlsMixed Cohort
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 →
Contribute
Private, reviewed by a human. Not a public comment thread.