Bjørklund, Geir, Peana, Massimiliano, Dadar, Maryam et al. · Clinical immunology (Orlando, Fla.) · 2020 · DOI
Mercury is a toxic metal that can enter the body through dental fillings, certain vaccines and medicines, seafood, and environmental sources. This review examines how mercury exposure might trigger or worsen autoimmune conditions—where the immune system attacks the body's own tissues. In people who are genetically susceptible, even low levels of mercury exposure over time could cause inflammation and increase harmful antibodies in the blood.
Understanding potential environmental triggers of immune dysfunction is relevant to ME/CFS, as many patients report symptom onset following infections or exposures. If mercury exposure can aggravate autoimmune responses in susceptible individuals, identifying and measuring mercury burden might inform personalized treatment approaches and environmental remediation strategies in ME/CFS populations.
This review does not establish that mercury exposure causes ME/CFS or definitively proves mercury worsens symptoms in ME/CFS patients specifically. It presents plausible mechanistic pathways but does not provide clinical trial data, prospective cohort evidence, or ME/CFS-specific outcome data. The study cannot distinguish between mercury as a primary trigger versus a cofactor in genetically predisposed individuals.
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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