When it comes to pesticides, children are among the most vulnerable. Pound for pound--they drink 2.5 times more water, eat 3-4 times more food, and breathe twice as much air. They also face exposure in the womb and via breast milk. This is true for every child - no matter where they live. A recent study out of Harvard linked low-level, dietary exposure to organophosphate pesticides (OP's) with increased prevalence of ADHD in kids.