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Journal Article

Citation

Park JY, Wu LT. Drug Alcohol Depend. 2017; 177: 1-13.

Affiliation

Department of Psychiatry and Behavioral Sciences, School of Medicine, Duke University, BOX 3903, Durham, NC, USA; Department of Medicine, School of Medicine, Duke University, Durham, NC, USA; Duke Clinical Research Institute, Duke University Medical Center, Durham, NC, USA; Center for Child and Family Policy, Sanford School of Public Policy, Duke University, Durham NC, USA. Electronic address: litzy.wu@duke.edu.

Copyright

(Copyright © 2017, Elsevier Publishing)

DOI

10.1016/j.drugalcdep.2017.03.009

PMID

28549263

Abstract

BACKGROUND: The use of marijuana for medical purposes is now legal in some U.S. states and other jurisdictions, such as Canada, and Israel. Despite the widespread legalization of medical marijuana globally, there is limited information on patterns and correlates of medical marijuana use (MMU). We conducted a literature review to assess prevalence, reasons, perceived effects, and correlates of MMU among adolescents and adults.

METHODS: We searched peer-reviewed articles in English between January 1996 and August 2016 from several databases (PubMed, Google Scholar, Embase, CINAHL, and PsycINFO) using different combinations of keywords.

RESULTS: A total of 25 articles met the inclusion criteria. In the U.S., national survey estimates of prescribed MMU was 1.1% among 12th graders and 17% among adults who reported past-year marijuana use. The reported prevalence of prescribed MMU ranged from <1.7% in Israeli cancer patients to 17.4% in American health care patients. The reported prevalence of self-medication with marijuana ranged from 15% in Canadian patients with chronic pain to 30% in British patients with multiple sclerosis. Pain was the most frequently endorsed reason for use. MMU appeared to provide symptom relief for a range of pain conditions, sleep disturbance, and anxiety symptoms, but it did not appear to provide sufficient relief of cluster headache symptoms. Non-medical marijuana use was a common factor associated with MMU across studies.

CONCLUSION: Either MMU or self-medication with marijuana was common, mainly due to pain management. Additional research is needed to evaluate temporal and causal associations of non-medical marijuana use with MMU.

Copyright © 2017 Elsevier B.V. All rights reserved.


Language: en

Keywords

Marijuana use; Medical marijuana; Medical marijuana laws; Pain; Self-medicate

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