A new study has found that people who lived in the Ohio River Valley between 1991 and 2013 have higher levels of a chemical called PFOA in their bloodstream than the national average.
PFOA, also called C-8, is a toxic chemical that was used to make products including non-stick cookware for decades. Its impact on health is the subject of ongoing study; even small amounts are thought to cause larger body mass index in adults, negative responses to vaccines and smaller birth weight in babies.
PFOA was manufactured, among other places, at the DuPont plant in Parkersburg, West Virginia. That plant no longer uses PFOA, and as a result of a class action lawsuit and settlement, scientists found links between several types of cancers and PFOA exposure.