Attention-Deficit/Hyperactivity Disorder and Urinary Metabolites of Organophosphate Pesticides, Pediatrics, May 2010
Researchers compared urinary concentrations of pesticides (1139 children) with diagnosis of attention-deficit/hyperactivity disorder (ADHD).
For the most commonly detected pesticide metabolite (dimethyl thiophosphate), "children with levels higher than the median of detectable concentrations had twice the odds of ADHD." Lead author Maryse Bouchard: "I think it's fairly significant. A doubling is a strong effect."
They tested for 6 pesticide metabolites. Most children (93.8%) had at least one detectable metabolite.
"These findings support the hypothesis that organophosphate exposure, at levels common among US children, may contribute to ADHD prevalence."MSNBC has a good summary:
Pesticides In Kids Linked To ADHD
The National Academy of Sciences says that diet is a major source of pesticide exposure in children. In a 2008 government report, detectable concentrations of malathion were found in:
- 28% of frozen blueberry samples
- 25% of fresh strawberry samples
- 19% of celery samples
- Peanut butter
- Great northern beans
- Green beans
- Baked goods: bread, bagel, crackers, Kashi cereal, Oreos, granola bars, brownie, scone, tortilla
- Soy milk
- Raw almonds