NEW YORK (AP) - Researchers say air pollution may harm babies even before they draw their first breath. A Columbia University study finds prenatal exposure to air pollution may be linked to genetic changes tied to a higher cancer risk.
The study followed 60 newborns and their non-smoking mothers in low-income neighborhoods. The mothers wore backpack air monitors during the third trimester of pregnancy. The study's senior author says the newborns with higher levels of exposure had about a 50 percent increase in the level of persistent genetic abnormalities.