Health + Wellness

With PFAS in Packaging, How Safe Is Microwave Popcorn?

microwave popcorn

Munching handfuls of microwave popcorn might be perfect for movie night, but your snack could be loading your body with potentially harmful “forever chemicals,” experts warn.

Many microwave popcorn bags are lined with PFAS (perfluoroalkyls and polyfluoroalkyl substances), and evidence has shown that these chemicals will leach into the snack during popping.

Studies have found “high levels of these compounds in the blood of people who ate microwave popcorn regularly, so it does get into the bloodstream,” says Dr. David Heber, founding director of the UCLA Center for Human Nutrition.

What are PFAS?

PFAS compounds are called forever chemicals because they break down very slowly, accumulating both in the environment and within human bodies.

The chemicals are commonly found in drinking water supplies throughout the United States, and can be found in the blood of 97% of U.S. residents, the federal government estimates.

“There’s been a lot of attention on drinking water, but food is also a major source of exposure and studies have shown that consuming microwave popcorn and fast food is correlated with higher PFAS levels in the body,” according to David Andrews, a senior scientist with the nonprofit Environmental Working Group.

PFAS chemicals originally were developed in the 1950s as part of the nonstick coating of pans, Heber said.

They’ve since been added to many consumer products, including cleaning solutions, waterproof makeup, firefighting foam and stain-resistant coatings for carpets and upholstery.

RELATED: How Bad Could That Tub Of Popcorn Be?

How PFAS get into microwave popcorn

Microwave popcorn manufacturers add PFAS to the lining of the bags to

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