We know living near a freeway is bad for all manner of lung diseases — asthma, bronchitis, emphysema — and even heart disease. This study builds on 2010 research that also found an association between living near a freeway and autism.

Researchers have found that exposure to traffic-related air pollution during pregnancy is associated with autism, according to a new study released on Monday. The study, published online in the Archives of General Psychiatry, found evidence that pollution may affect the developing brain among children whose mothers lived in areas where there was poor air quality.

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