Article: Recognizing signs of drug abuse. (includes information about commonly abused drugs and their physical, psychological and behavioral effects)

As her friends figured out, Lucyna is smoking marijuana, an illegal drug. She is one of millions in the United States who abuse marijuana and other illegal drugs. The Substance Abuse and Mental Health Services Administration reports that 23 million people age 12 and older have used illegal drugs during the past year.

Like Lucyna, abusers take drugs for nonmedical purposes and end up impairing their physical, mental, emotional, or social well-being. The major illegal drugs of abuse are:

* Cannabis: marijuana * Depressants: alcohol, barbiturates, and tranquilizers * Hallucinogens: LSD and PCP * Narcotics: heroin and opium * Stimulants: crack/cocaine and ...

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