Abstract

Toxicology Microplastics—organic polymer particles smaller than 5 millimeters—have been found throughout the global biosphere. In addition to their effects on wildlife and ecosystems, there is growing concern about whether ingestion of microplastics through drinking water, inhalation, or food can affect human health. In a Perspective, Vethaak and Legler discuss the many unknowns, including exposure levels, whether microplastics can enter cells, and, if they do, what damage might be caused. It is also unclear whether microplastics are contaminated with possible pathogens. Much more research is needed to understand the impact of microplastics on human health. Science , this issue p. [672][1] [1]: /lookup/doi/10.1126/science.abe5041

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