Rachel Shaffer is a research assistant.
What do waterproof jackets, car wax, and non-stick pans have in common?
Aside from being great Father’s Day presents (Dad, I’m thinking ahead this year!), they also all are made with perfluorinated compounds, or PFCs. There are hundreds of different PFCs, and their oil- and water-resistant properties make them useful in a variety of products, from cookware and carpets to food-packaging and electronics.
Unfortunately, these chemicals have less desirable properties as well. Thanks to their strong molecular bonds, PFCs do not readily break down; they persist in the environment and in our bodies. And, widespread use has led to extensive human exposure. The Centers for Disease Control’s (CDC) human biomonitoring program, the National Health and Nutrition Examination Survey (NHANES), detected four types of PFCs in over 98% of samples representative of the U.S. population collected in 2003-2004.
Two of the compounds detected in NHANES, perfluorooctane sulfonic acid (PFOS) and perfluorootanoic acid (PFOA), are the focus of three new studies published this month in Environmental Health Perspectives. These studies, one reporting an association with osteoarthritis in women, another an association with semen quality in men, and a third an association with asthma in children, add to a growing concern about the potential adverse effects of these ubiquitous chemicals.
What follows is a brief overview of the findings of these new studies. Read More