We're all aware that some beverages aren't great for teeth, but it turns out that a drink's packaging could also do some serious chomper damage. In the latest hit against BPA—a.k.a. Bisphenol A, a common chemical found in a variety of goods—researchers have warned that plastic food containers made with the material could irreversibly disrupt enamel development in young children.
Researchers at the French National Institute of Health and Medical Research found that in kids under five years old, exposure to BPA can affect hormones needed to stimulate enamel growth. They drew this conclusion by studying rats given daily doses of BPA (equivalent to humans' daily exposure) from birth until 30 days old. They found that BPA—as well as another chemical called viclozolin, a common fungicide used in vinyards and orchards—affected the genes that control mineralization of tooth enamel.
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According to the study's lead author Dr. Katie Jedeon, because tooth enamel develops between the third trimester of pregnancy and the age of five, this is a critical time in the lifespan of children's teeth. "Minimising exposure to endocrine disruptors at the stage in life as a precautionary measure would be one way of reducing the risk of enamel weakening," Jedeon said in her report at at the 2016 European Congress of Endocrinology.