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  2. Substance abuse - Wikipedia

    en.wikipedia.org/wiki/Substance_abuse

    Substance abuse, also known as drug abuse, is the use of a drug in amounts or by methods that are harmful to the individual or others. It is a form of substance-related disorder. Differing definitions of drug abuse are used in public health, medical, and criminal justice contexts. In some cases, criminal or anti-social behavior occurs when the ...

  3. Substance use disorder - Wikipedia

    en.wikipedia.org/wiki/Substance_use_disorder

    Substance use disorder (SUD) is the persistent use of drugs despite substantial harm and adverse consequences to self and others. [7] Related terms include substance use problems[8] and problematic drug or alcohol use.[9][10] Substance use disorders vary with regard to the average age of onset. [11] It is not uncommon for those who have SUD to ...

  4. Substance dependence - Wikipedia

    en.wikipedia.org/wiki/Substance_dependence

    Substance dependence, also known as drug dependence, is a biopsychological situation whereby an individual's functionality is dependent on the necessitated re-consumption of a psychoactive substance because of an adaptive state that has developed within the individual from psychoactive substance consumption that results in the experience of withdrawal and that necessitates the re-consumption ...

  5. Recreational drug use - Wikipedia

    en.wikipedia.org/wiki/Recreational_drug_use

    L'Absinthe, an 1876 portrait by Edgar Degas. Recreational drug use is the use of one or more psychoactive drugs to induce an altered state of consciousness, either for pleasure or for some other casual purpose or pastime. [1] When a psychoactive drug enters the user's body, it induces an intoxicating effect. [1]

  6. Substance-related disorder - Wikipedia

    en.wikipedia.org/wiki/Substance-related_disorder

    Substance-related disorders, also known as substance use disorders, can lead to large societal problems. It is found to be greatest in individuals ages 18–25, with a higher likelihood occurring in men compared to women, and urban residents compared to rural residents. On average, general medical facilities hold 22% of patients with substance ...

  7. Substance abuse prevention - Wikipedia

    en.wikipedia.org/wiki/Substance_abuse_prevention

    Substance abuse prevention, also known as drug abuse prevention, is a process that attempts to prevent the onset of substance use or limit the development of problems associated with using psychoactive substances. Prevention efforts may focus on the individual or their surroundings.

  8. Alcohol abuse - Wikipedia

    en.wikipedia.org/wiki/Alcohol_abuse

    The rewarding effects of alcohol are attributed to dopamine, serotonin, GABA, endocannabinoids, serotonin and opioid peptides. [8] Alcohol is the most recreationally used drug internationally, [64] throughout history it has played a variety of roles, from medicine to a mood enhancer. Alcoholism and alcohol abuse however have undergone rigorous ...

  9. Addiction - Wikipedia

    en.wikipedia.org/wiki/Addiction

    Drug addiction, which belongs to the class of substance-related disorders, is a chronic and relapsing brain disorder that features drug seeking and drug abuse, despite their harmful effects. [25] This form of addiction changes brain circuitry such that the brain's reward system is compromised, [ 26 ] causing functional consequences for stress ...

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