A suspected carcinogen used to make Teflon was found in nearly all the umbilical cord blood samples tested by researchers at Johns Hopkins Hospital. The researchers are now trying to determine whether it has harmed the newborns.

Of the 300 newborns tested, perfluorooctanoic acid, was found in the cord blood of 298.

“It’s very clear that PFOA is being released into the environment, and it’s pretty much ubiquitous. But we don’t know if it’s toxic to people at these levels,” said Dr. Lynn Goldman, one of the Hopkins researchers.
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How PFOA, which has been found in many places worldwide, including polar bears, gets into the bloodstream is not known.

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