Whats The Difference Between Addiction And Disease?

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Specifically, Im talking about alcohol and drugs. An alcoholic is said to have a disease. People who have problems with illicit drugs like cocaine, marijuana, heroin, etc, and even legal drugs like pain killers are said to be addicts. Whats the difference? Isnt alcoholism a form of chemical dependency (addiction). Why is illicit drug dependency not seen as a disease? Is the difference because alcohol is socially acceptable? I submit that an alcoholic is an addict and not necessarily diseased,

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