New research adds to the growing body of evidence linking traffic-related air pollution to the development of autism.The study also linked exposure to air pollution during the third trimester of pregnancy, in particular, to autism in the offspring.
Given that info perhaps it would be a good idea to check a woman's heavy metal and other toxic elements accumulation before becoming pregnant. If there is an accumulation then chelation could be done to remove the metals before becoming pregnant. Studies have probably not been done on this as yet to measure whether removing these toxins would decrease the autism risk. But until then, why take the chance?
read about the study here: http://www.medscape.com/viewarticle/833653?nlid=68044_2981&src=wnl_edit_dail&uac=129322EZ
read about heavy metal testing we do here: