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Brain Chemistry
Refers to the complex interactions of chemicals and neurotransmitters in the brain that affect mood, thought processes, and behavior.
Psychoactive Drug
A chemical substance that alters perceptions and moods.
Withdrawal
The process of reducing or stopping the use of a substance after prolonged and frequent use, often leading to uncomfortable symptoms.
Heroin
An opioid drug made from morphine, a natural substance taken from the seed pod of various opium poppy plants, known for its addictive properties.
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