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Methamphetamine25or hemorrhage. Chronic methamphetamine use can also causean inflammation of the lining of the heart.Other effects caused by methamphetamine include headaches,decreased appetite, dry mouth, dilated pupils, trembling,chest pains, increased respiration and shortness of breath, hyperthermia(elevated body temperature), insomnia, and nausea andvomiting. In more severe cases (i.e., overdoses) it can produceseizures and convulsions, stroke, heart attacks, and death. Therisk of encountering these more serious side effects are greatlyincreased when methamphetamine is used in combination withother drugs like cocaine, marijuana, alcohol, and heroin.HOW METHAMPHETAMINEWORKS IN (AND DESTROYS) THE BRAINIn the brain, methamphetamine causes massive amountsof the neurotransmitters dopamine, norepinephrine, andserotonin to be released from neurons in the brain, particularlyin the limbic system and frontal cortex. Scientists believethe increased dopamine release in these brain regions isresponsible for methamphetamine’s ability to keep peopleawake, alert, energetic, active, and possibly addicted.Methamphetamine acts on a variety of brain regions to producea number of different effects (Table 2.1).Table 2.1 Methamphetamine’s Effects on the BrainEFFECTBRAIN REGION(S)Euphoria and pleasureDecreased appetite, hyperthermiaParanoia, hallucinationsIrritation, aggression, violenceIncreased respirationLimbic systemHypothalamusFrontal cortex,visual cortexFrontal cortexBrainstem

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