About 8-12 % of US children have attention deficit hyperactivity disorder (ADHD). Earlier research has linked higher ADHD levels with exposure to lead or to mothers smoking during pregnancy. Pesticides may also play a role in the development of ADHD. A recent study of 1,139 US children reported that higher urinary levels of organophosphate pesticides are associated with significantly higher rates of ADHD. This research by Bouchard et al. is now in press in Pediatrics |