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from Wikipedia, the free encyclopedia

Drug addiction

Drug addiction, or substance dependence is the compulsive use of psychoactive drugs, to the point where the user has no effective choice but to continue use.

Drug addiction has two components: physical dependency, and psychological dependency.

Note:   The above text is excerpted from the Wikipedia article "Drug addiction", which has been released under the GNU Free Documentation License.
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September 26, 2016

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