Assertion: methamphetamine | /r/Causes | feelings of pleasure
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text: By altering the levels of neurotransmitters in the brain, methamphetamine causes feelings of pleasure and euphoria.3 Methamphetamine is a neurotoxin and potent stimulant, which can also cause cerebral edema and hemorrhage, paranoia and hallucinations.3 Short-term effects include vomiting, insomnia, hyperactivity, decreased appetite, increased respiration and tremors.2, 5 Long-term effects can include psychological addiction, stroke, violent behavior, anxiety, confusion, paranoia, auditory hallucination, mood disturbances, and delusions.2, 5 Methamphetamine use can eventually cause depletion of monoamines in the brain, which can have an effect on learning.3, 7, 8