A report prepared for the European Parliament, co-authored by Harvard Chan School’s Philippe Grandjean, adjunct professor of environmental health, outlines the health benefits of eating organic food and practicing organic agriculture.

researchers found that women’s exposure to pesticides during pregnancy, measured through urine samples, was associated with negative impacts on their children’s IQ and neurobehavioral development, as well as with ADHD [attention deficit hyperactivity disorder]

I have thought for a long time that it was likely that the neurotoxic effect of pesticides could affect the neurons and neurochemistry in our own bodies. Here is a report that backs that up with some data.