A new national study has parents and health experts alarmed: U.S. preschoolers are being exposed to dozens of potentially harmful chemicals every single day, many of which aren’t even regularly tracked. Researchers analyzed urine samples from over 200 children ages 2 to 4 and found traces of 96 chemicals, with some detected in nearly every child tested.
“These results are deeply concerning,” says lead author Deborah Bennett, a UC Davis professor of Public Health Sciences. “Early childhood is when the brain and body are rapidly developing—and these chemicals can disrupt hormones, immunity, and even brain growth.”
So, where are these chemicals hiding? Everywhere, it seems. Common culprits include phthalates in toys and food packaging, parabens in shampoos and lotions, bisphenols in plastic containers and receipts, pesticides in produce, and flame retardants in furniture. Even everyday actions, such as playing on the floor, touching surfaces, or putting hands in mouths, can increase kids’ exposure.
The study, part of the NIH’s ECHO program, revealed troubling trends. While some chemicals, like parabens and older phthalates, have decreased in recent years, newer plasticizers and pesticides are on the rise. Younger kids, kids of color, and second or third children often had higher exposure levels than older siblings or white peers.
While you can’t avoid all chemicals, you can take simple steps to reduce contact, especially for children. Choose safer products labeled phthalate-free, paraben-free, and fragrance-free. Avoid plastics marked #3, #6, and #7, which may contain harmful chemicals like BPA. Wash your hands frequently, ventilate your home, and use HEPA filters if possible. Wash produce thoroughly and opt for organic options when possible to reduce pesticide exposure. Finally, clean regularly with a damp cloth to keep chemical-laden dust at bay.