I agree, exposure to lead, particularly from gasoline, was a huge factor in violent crime. It probably also explains the "weird spike" in violence from the 60'

I agree, exposure to lead, particularly from gasoline, was a huge factor in violent crime. It probably also explains the "weird spike" in violence from the 60's to the 80's mentioned at the end of the article, as more and more people started driving and cities converted to car-centric.