ocaine does not just make users feel euphoric, but it simultaneously releases brain chemicals related to fear and stress - bad feelings that linger after the euphoria fades." (Segell, MSNBC).
             Researchers supported by the National Institute on Drug Abuse have identified a process in the brain that may help explain addiction to cocaine and other drugs of abuse. Their research indicates that repeated exposure to cocaine causes a change in genes that leads to altered levels of a specific brain protein. This protein regulates the action of a normally occurring brain chemical called dopamine. It is a chemical messenger in the brain associated with the cocaine's pleasurable "rush"-the mechanism of addiction. Certainly, more research is needed to unlock the mysteries of addiction, but this information adds one
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