There is evidence that childhood exposure to lead causes permanent damage
http://www.theaustralian.com.au/news/health-science/there-is-evidence-that-childhood-exposure-to-lead-causes-permanent-damage/story-e6frg8y6-1226322345501
"CHILDHOOD exposure to environmental lead has been linked to mental, behavioural and physical deficits, and now the toxic lead dust has been connected to violent assault."
http://www.theaustralian.com.au/news/health-science/there-is-evidence-that-childhood-exposure-to-lead-causes-permanent-damage/story-e6frg8y6-1226322345501
"CHILDHOOD exposure to environmental lead has been linked to mental, behavioural and physical deficits, and now the toxic lead dust has been connected to violent assault."
