Human Genetics

, Volume 131, Issue 6, pp 779–789 | Cite as

Epidemiology of substance use disorders

Review Paper

Abstract

Epidemiological studies of substance use and substance use disorders (SUDs) have provided an abundance of data on the patterns of substance use in nationally representative samples across the world (Degenhardt et al. in PLoS Med 5(7):e141, 2008; Johnston et al. in Monitoring the future national survey results on drug use, 1975–2010, vol I, secondary school students. Institute for Social Research, Ann Arbor, MI, 2011; SAMHSA in Results from the 2010 national survey on drug use and health: summary of national findings, vol NSDUH, series H-41, HHS Publication No. (SMA) 11-4658. Substance Abuse and Mental Health Services Administration, Rockville, 2011). This paper presents a summary of the goals, methods, and recent findings on the epidemiology of substance use and disorders in the general population of adults and adolescents and describes the methods and findings on the genetic epidemiology of drug use disorders. The high 12-month prevalence rates of substance dependence in US adults (about 12 % for alcohol and 2–3 % for illicit drugs) approximate those of other mental disorders as well as chronic physical disorders with major public health impact. New findings from the nationally representative samples of US youth reveal that the lifetime prevalence of alcohol use disorders is approximately 8 % and illicit drug use disorders is 2–3 % (Merikangas et al. in J Am Acad Child Adolesc Psychiatry 49(10):980–989, 2010; Swendsen et al. in Arch Gen Psychiatry 69(4):390–398, 2012; SAMHSA in Results from the 2010 national survey on drug use and health: summary of national findings, vol NSDUH, Series H-41, HHS Publication No. (SMA) 11-4658. Substance Abuse and Mental Health Services Administration, Rockville, 2011). The striking increase in prevalence rates from ages 13 to 18 highlight adolescence as the key period of development of SUDs. The application of genetic epidemiological studies has consistently demonstrated that genetic factors have a major influence on progression of substance use to dependence, whereas environmental factors unique to the individual play an important role in exposure and initial use of substances. Identification of specific susceptibility genes and environmental factors that influence exposure and progression of drug use may enhance our ability to prevent and treat SUDs.

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© Springer-Verlag (outside the USA) 2012

Authors and Affiliations

  1. 1.Genetic Epidemiology Research Branch, Intramural Research ProgramNational Institute of Mental HealthBethesdaUSA

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