Broadly, addiction is defined as the continued use of a mood altering addictive substance or behaviours despite adverse consequences
Addiction can also be viewed as a continued involvement with a substance or activity despite the negative consequences associated with it
The term addiction is also sometimes applied to compulsions that are not substance-related, such as compulsive shopping, sex addiction/compulsive sex, overeating, problem gambling, exercise/sport and computer addiction
And a snap shot of the main concerns, a few of us are in deep trouble

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