Does Lead Poisoning Make You More Likely To Become A Criminal?

By Lecia Bushak, http://www.medicaldaily.com

 Image courtesy of Shutterstock

Image courtesy of Shutterstock

In the U.S., crime has been reduced significantly in the past several decades. Economists and researchers have hypothesized that this decline in crime is somehow linked to the removal of high lead levels from common things like gasoline or paint, and thus claim that lead poisoning at an early age may be cause for criminal activity later on.

Before Rudy Giuliani became the mayor of New York City in the early 1990s, the Big Apple was known for its high crime rates. Since the 1960s, rape, murder, and robbery rates had ballooned significantly. Giuliani came along with a plan to decrease crime with the “broken windows” theory, and it worked; crime dropped significantly. But it wasn’t just in New York City. Amazingly enough, it was happening all across the States during the last decade of the 20th century.

Why did the homicide rate decrease by over 40 percent by the end of the 1990s? Economists and criminologists have struggled to find a clear cut answer, and perhaps there is none. Some believe it’s because of an increase in police officers; others point to the fact that the number of criminals who are behind bars has risen. However, a fraction of researchers believe that the decline of crime is linked to lead.

Research has shown that having high levels of lead in blood could lead to decreased cognitive function, as well as aggressive or violent characteristics. According to the Centers for Disease Control and Prevention (CDC), having 5 micrograms per deciliter of lead in a child’s blood is considered abnormal. During the 1970s, the average U.S. resident had significantly higher levels of lead in their blood than the average person today.

So some economists have hypothesized that as the amount of leaded gasoline and lead paint increased during the 1970s, so did crime rates. Likewise, when lead levels began to drop, so did crime. Read More

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Posted on April 9, 2014, in Lead and tagged , , , , , , . Bookmark the permalink. Leave a comment.

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