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Chemical substances that produce physical, mental and emotional changes in a user

User Jkris
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Answer:

Psychoactive drugs are chemical substances that change a person's mental state.

Step-by-step explanation:

Psychoactive drugs are chemical substances that change a person's mental state. They do this by affecting the way the brain and nervous system work. Changes in brain function due to psychoactive drug use can affect a person's perceptions, moods, and/or consciousness.

User Tmdean
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