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BookmarkDrug 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.
See also:
Drug addiction has two components: physical dependency, and psychological dependency..
For more information about the topic Drug addiction, read the full article at Wikipedia.org, or see the following related articles:
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Note: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Drug addiction at Wikipedia.org. See the Wikipedia copyright page for more details.
