Drug

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  • Any substance, chemical or organic, that affects the body or mind of a living organism. The field of medicine roots its distinct drug classification system based on the treatment and prevention of disease and the toxicity and power of the drug. The legal system classifies drugs as controlled substances. Certain drugs are illegal; it is against the law to possess, use, and distribute these substances. Though the illegality of controlled substances varies across place, time, and amount, common examples include heroin, cocaine, and marijuana. The law also regulates and controls the use and distribution of legal drugs, such as pills prescribed by a physician. Compulsive use of a drug, often driven by chemical and emotional dependency, is known as drug addiction. Addiction, sometimes referred to ...

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