Would you like salt, butter -- and a helping of perfluorinated carboxylic acids (PFCAs) with your popcorn? You may say "yes" to the first two ingredients and "certainly not!" to the last one. But the problem is, if you are eating microwaved popcorn or packaged snack foods, you are most likely getting dosed with these potentially toxic chemicals without any choice.
PFCAs, the best known of which is perfluorooctanoic acid (PFOA), have been found to accumulate in the blood of people, as well as in wildlife, worldwide. PFOAs are the breakdown products of chemicals used to make non-stick and water-resistant and stain-repellant products that coat kitchen pans, some clothing and food packaging.