This headline topped an article in our morning paper, from the Los Angeles Times.
"One-third of attention deficit hyperactivity disorder cases are linked to prenatal exposures to cigarette smoke or childhood exposures to lead, researchers reported Monday.
The study, lead by researchers at Cincinnati Children's Hospital Medical Center, was the first to estimate the number of ADHD cases tied to environmental toxins.
The report 'provides further evidence that we need to find ways to dramatically reduce prenatal tobacco smoke exposures and childhood lead exposures,' said lead author Dr. Bruce Lamphear".
Don't smoke, especially if you are pregnant, and don't go places where you can't escape other people's smoke.