low levels of exposure, not what we would call a toxic exposure. now these were done prior to 2001 when this particular pesticide was banned for household use but still used in open spaces and in farming and in agriculture around the world and it is one of the organo phosphates which is a whole class of pesticides that are concerning. what they saw there were changes in brain development. they used mri to look at these children now who are school age and they saw differences in areas that are related to attention, to iq, to emotion, even some areas that have to do with male, female differentiation. this is very concerning when we look at we have increase in pervasive developmental delay, increase in add. is this one of the reasons? i'm sure it is multifactorial. what this says to me is absolutely wash your fruits and vegetables. make sure you get any pesticides are he is dues