Official website of the Johns Hopkins Antibiotic (ABX), HIV, Diabetes, and Psychiatry Guides, powered by Unbound Medicine. Johns Hopkins Guide App for iOS, iPhone, iPad, and Android included. Explore these free sample topics:
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- Tobacco use disorder is a cluster of behavioral, cognitive, and physical characteristics that occur in persons who are regular cigarette smokers or users of other tobacco products.
- Nicotine is the active ingredient in tobacco that triggers dopamine release and leads to the pleasurable effects of smoking.
- Chronic nicotine exposure results in tolerance and physical dependence.