Assertion: methamphetamine | /r/Causes | decreased salivary flow
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text: As a sympathomimetic amine, methamphetamine stimulates the sympathetic nervous system, acting on adrenergic receptors and causing decreased salivary flow, leading to xerostomia and increased propensity for tooth decay.1-5 Concomitant drug use, e.g., cigarette smoking and/or alcohol consumption, can also exacerbate xerostomia.1 Methamphetamine users who have poor oral hygiene habits may further exacerbate the problem by allowing the build-up of plaque and cariogenic bacteria to continually metabolize sugar into acids.1, 18, 19 Individuals using methamphetamine may also consume large quantities of carbonated, sugared soda to both quench thirst and satisfy a craving for sweets.1, 18, 19