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[Perspectives] Marie Vahter: the arsenic detective

Marie Vahter first came across the harm arsenic can do to the environment and health in her native Sweden during the early 1980s, when a large copper smelter was spewing the toxin into the air and sea. She did her PhD in toxicology, focusing her dissertation on the kinetics of inorganic forms of arsenic in relation to animal species. Today, she is a Professor in Environmental Medicine at the Karolinska Institutet, Stockholm, where she directs research into the immediate and long-term effects of early-life exposure to toxic metals such as arsenic, manganese, cadmium, and lead.