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A Toxic Connection
A recently released study concludes that there is a strong association between preschoolers' blood lead levels and crime rates 19 years later, when the preschoolers grow up. Declines in lead levels in several industrialized countries corresponded with later drops in crime rates, the study says.
![[Graph: Preschool blood levels vs. the crime rate 19 years later]](http://media3.washingtonpost.com/wp-dyn/content/graphic/2007/07/08/GR2007070800371.gif)
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