![]() The prevalence of past year marijuana dependence and abuse decreased, except among persons aged ≥26 years. Among persons aged ≥12 years, the prevalence of perceived great risk from smoking marijuana once or twice a week and once a month decreased and the prevalence of perceived no risk increased. During 2002–2014, the prevalence of marijuana use during the past month, past year, and daily or almost daily increased among persons aged ≥18 years, but not among those aged 12–17 years. Results: In 2014, a total of 2.5 million persons aged ≥12 years had used marijuana for the first time during the preceding 12 months, an average of approximately 7,000 new users each day. ![]() This report describes national trends for selected marijuana use and related indicators, including prevalence of marijuana use initiation perception of harm risk, approval, and attitudes perception of availability and mode of acquisition dependence and abuse and perception of legal penalty for marijuana possession. ![]() NSDUH collects information about the use of illicit drugs, alcohol, and tobacco initiation of substance use frequency of substance use substance dependence and abuse perception of substance harm risk or no risk and other related behavioral health indicators. Because of certain state-level policies that have legalized marijuana for medical or recreational use, population-based data on marijuana use and other related indicators are needed to help monitor behavioral health changes in the United States.ĭescription of System: The National Survey on Drug Use and Health (NSDUH) is a national- and state-level survey of a representative sample of the civilian, noninstitutionalized U.S. population aged ≥12 years reported using marijuana during the preceding month. ![]() Problem/Condition: In the United States, marijuana is the most commonly used illicit drug. ![]()
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