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High Cholesterol Linked to Cookware Chemicals

Study Shows Possible Health Risks in Kids From Chemicals Used to Make Nonstick Cookware
By
WebMD Health News
Reviewed by Louise Chang, MD

Sept. 7, 2010 -- Exposure to chemicals used in the manufacture of nonstick cookware and waterproof and stain-resistant products could be raising cholesterol levels in children, a new study suggests.

Researchers analyzed blood levels of the chemicals perfluorooctanoic acid (PFOA) and perfluoroctanesulfonate (PFOS) in more than 12,000 kids living in West Virginia and Ohio.

Those with the highest blood levels of the chemicals were also more likely to have abnormally high total cholesterol and LDL "bad" cholesterol, study researcher Stephanie J. Frisbee, MSc, of the West Virginia University School of Medicine tells WebMD.

While the study does not prove exposure to PFOA and PFOS raises cholesterol, the findings warrant further study, Frisbee says.

"These chemicals are in the environment and they are in us," she says. "More than anything this study highlights that we had better figure out how we are being exposed and what this exposure is doing to us."

Exposure Probably Not From Pots and Pans

The chemicals have been used for decades in the production of a wide range of everyday products. PFOA, also known as C8, is mainly used in the manufacture of nonstick cookware, while PFOS is mostly used to make clothing, fabrics, food packaging, and carpeting water-resistant and stain-resistant.

The route of human exposure is not well understood, but recent studies suggest that just about everyone has some PFOA and PFOS in the blood. Identified sources of exposure include drinking water, food packaging, microwave popcorn, and even air.

Cookware containing Teflon, made by DuPont, and similar nonstick surfaces are made using PFOA. But the cookware industry has long maintained that cooking in nonstick pots and pans is not a significant source of exposure to the chemical, and the science appears to back up the claim.

"PFOA is used in the manufacture of the coating used in nonstick cookware, but it does not exist in the coating when the products get to the consumer," Cookware Manufacturing Association Executive Vice President Hugh J. Rushing tells WebMD.

University of Pittsburgh emeritus professor of chemistry Robert L. Wolke, PhD, agrees that nonstick cookware contains little if any PFOA.

"Cooking with nonstick cookware could not possibly be the source of the exposures we are now seeing," he tells WebMD. "PFOA is now found in humans all over the world, including places where they have never heard of a Teflon pan."

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