#clues

Baby teeth hold clues to the harms of toxic metals for infants — and older kids

kuppa_rock/Getty Images Baby teeth have a value that goes beyond money from the tooth fairy. Scientists say they also hold the key to figuring out what metals in the environment infants were exposed to — and how they affect not just developing baby brains, but behavior in adolescents. "It seems like an impossible question to answer," says Dr. Manish Arora, a professor of environmental medicine at the Icahn School of Medicine at Mount Sinai. "Luckily for us, baby teeth are this amazing organ." He says baby teeth work kind of like tree growth rings....