Americas Real Criminal Element: Lead New research finds Pb is the hidden villain behind violent crime, lower IQs, and even the ADHD epidemic. And fixing the problem is a lot cheaper than doing nothing. —Kevin Drum | January/February 2013 Issue Neurological research is demonstrating that leads effects are even more appalling, more permanent, and appear at far lower levels than we ever thought. For starters, it turns out that childhood lead exposure at nearly any level can seriously and permanently reduce IQ. Blood lead levels are measured in micrograms per deciliter, and levels once believed safe—65 μg/dL, then 25, then 15, then 10—are now known to cause serious damage. The EPA now says flatly that there is no demonstrated safe concentration of lead in blood, and it turns out that even levels under 10 μg/dL can reduce IQ by as much as seven points. An estimated 2.5 percent of children nationwide have lead levels above 5 μg/dL. m.motherjones/environment/2013/01/lead-crime-link-gasoline
Posted on: Fri, 02 Jan 2015 21:18:04 +0000
Trending Topics
Recently Viewed Topics
© 2015