Narrator: This is Science Today. Bisphenol A, or BPA, is a chemical that has been used for years in hard plastics, linings of tin cans and even in dental sealants. But over the years, the estrogen-like compound has become controversial due to health concerns, particularly in developing children. Now a University of California, Berkeley, study has linked BPA exposure to thyroid hormone changes in pregnant women and newborns.
Chevrier: This was the first study to look at this relationship among pregnant women and this is particularly important because thyroid hormones play a critical role in fetal and child growth and during development.
Narrator: Epidemiologist Jonathan Chevrier of the Center for Environmental Research and Children's Health says their findings add to the growing concern about the effects of BPA. Last summer, the Food and Drug Administration officially banned it from use in baby bottles and sippy cups.
Chevrier: Because this is the first study on the topic, it's important to understand that the results, number one, need to replicated to make sure what we found was not due to chance.Narrator: For Science Today, I'm Larissa Branin.