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Could low-level exposure to polluting chemicals be analogous to exercise - a beneficial source of stress that strengthens the body? Some scientists studying the phenomenon of hormesis (beneficial or stimulatory effects caused by low-dose exposure to toxic substances) claim that that this may be the case. Is A Little Pollution Good For You? critically examines the current evidence for hormesis.
Kevin C. Elliott is Associate Professor at Lyman-Briggs College and the Department of Fisheries and Wildlife at Michigan State University.