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When adolescents engage in uncharacteristic behaviors, such as running away from home, promiscuity, and truancy, or suddenly begin doing poorly in school, this may signal:
Acetylcholine
A neurotransmitter in the brain and body that plays significant roles in muscle activation, memory, and learning.
Half-life
The time required for the concentration of a substance in the body to decrease by half, often used in the context of drug metabolism.
Substance Use
The ingestion, inhalation, injection, or application of psychoactive substances, which may lead to addiction in some individuals.
Biotransformation
The chemical alteration of substances within the body, such as the metabolizing of medications or toxins by the liver.
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