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Long-term exposure to manganese in welding fumes may affect welders' brains over time, according to a new, small study described in the National Institutes of Health's MedLine Plus website.
In the study, which appears online in the journal Neurology, welders who worked at shipyards and a metal fabrication plant and had an average of 30,000 hours of lifetime welding exposure had manganese levels that were twice the upper limits of normal.
Compared to the non-welders included in the study,...