Pesticides in our food are likely one of the reason as to why we see a "pandemic-like" increase in Alzheimer's disease among our old [1]. It is not too far-fetched to think this could affect our young in various ways as well.

[1] http://openvault.wgbh.org/catalog/V_474CF2C8A20B4173988486AC... (relevant portion min 40-45)