Welding processes generate significant occupational and environmental pollutants and hazards. The common pollutants from the welding processes include metal fumes, particulate matter and gas by-products. Epidemiological studies have shown a number of health effects on welders from short-term and long-term exposure to welding fumes. This article is the first to integrate scientific results, mainly from epidemiological studies, focusing on metals from different welding processes associated with well-studied and emerging diseases/health conditions. An understanding of possible adverse health effects of exposure to welding metal fumes is important to develop prevention strategies that benefit and impact workers’ health.



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