Drugs that are abused alter mood or perception because of their effect on the brain and neurotransmitters.

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Drugs that are abused often target the brain's reward system by flooding the circuit with dopamine—a neurotransmitter involved in movement, emotion, cognition, motivation, and feelings of pleasure. This can lead to altered mood, perception, and behavior as the drug affects how the brain processes these neurotransmitters.

Drugs That Are Abused Alter Mood or Perception Because of Their