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http://www.biologynews.net/archives/2010/09/17/why_the_craving_for_cocaine_wont_go_away.html

This article explains why the craving for cocaine won't go away. The researchers tested this experiment on mice. The behavior of the mice that had the cocaine, differed from the one that didn't. It article brings out that even if you've had long periods without that drugs, a person could still become addicted. The drug makes the person crave more, which makes it harder to quit partaking of the drug.

I believe this article is very useful in many ways. It reminds why I should never do drugs, and may help people who have this steps start to take steps to quit. Also, This article helps people understand more about why they shouldn't do drugs.