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Unformatted text preview: Starts off with casual use for a good-feeling effect, but can become addicted Seratonin levels in the brain drop Causes an increase of nonepinephrine increased heart rate Sources Fifield 2 Leshner, Alan I. &quot;Oops: How Casual Drug Use Leads to Addiction.&quot; National Institute on Drug Abuse . National Institutes of Health. 6 Oct. 2007 &lt;http://www.nida.nih.gov/&gt; . &quot;Ecstasy.&quot; Brown University Health Education . 16 May 2006. Brown University. 6 Oct. 2007 &lt;http://www.brown.edu/Student_Services/Health_Services/Health_Education/atod/od_ec stasy.htm&gt;....
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- Fall '07