Exposure to fine pollutant particles during fetal life was found to be associated with brain abnormalities (thinner cortex in several brain regions). These affected brain regions were found to be associated with impaired inhibitory control in these children.
Researchers further identified these relationships despite the fact that the levels of particulate pollutant particles found in this study are at levels considered to be "safe"!
It was further suggested that we cannot accept current "safe" levels of pollution in or cities to truly be safe.
Biol Psychiatry . 2018 Jan 31