The Public Health Effects of Legalizing Marijuana

Author

Listed:

  • D. Mark Anderson
  • Daniel I. Rees

Abstract

Thirty-six states have legalized medical marijuana and 18 states have legalized the use of marijuana for recreational purposes. In this paper, we review the literature on the public health consequences of legalizing marijuana, focusing on studies that have appeared in economics journals as well as leading public policy, public health, and medical journals. Among the outcomes considered are: youth marijuana use, alcohol consumption, the abuse of prescription opioids, traffic fatalities, and crime. For some of these outcomes, there is a near consensus in the literature regarding the effects of medical marijuana laws (MMLs). As an example, leveraging geographic and temporal variation in MMLs, researchers have produced little credible evidence to suggest that legalization promotes marijuana use among teenagers. Likewise, there is convincing evidence that young adults consume less alcohol when medical marijuana is legalized. For other public health outcomes such as mortality involving prescription opioids, the effect of legalizing medical marijuana has proven more difficult to gauge and, as a consequence, we are less comfortable drawing firm conclusions. Finally, it is not yet clear how legalizing marijuana for recreational purposes will affect these and other important public health outcomes. We will be able to draw stronger conclusions when more posttreatment data are collected in states that have recently legalized recreational marijuana.

Suggested Citation

  • D. Mark Anderson & Daniel I. Rees, 2023.
    The Public Health Effects of Legalizing Marijuana,”
    Journal of Economic Literature, American Economic Association, vol. 61(1), pages 86-143, March.
  • Handle: RePEc:aea:jeclit:v:61:y:2023:i:1:p:86-143

    DOI: 10.1257/jel.20211635

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    More about this item

    JEL classification:

    • I12 – Health, Education, and Welfare – – Health – – – Health Behavior
    • I18 – Health, Education, and Welfare – – Health – – – Government Policy; Regulation; Public Health
    • K32 – Law and Economics – – Other Substantive Areas of Law – – – Energy, Environmental, Health, and Safety Law
    • K42 – Law and Economics – – Legal Procedure, the Legal System, and Illegal Behavior – – – Illegal Behavior and the Enforcement of Law
    • R41 – Urban, Rural, Regional, Real Estate, and Transportation Economics – – Transportation Economics – – – Transportation: Demand, Supply, and Congestion; Travel Time; Safety and Accidents; Transportation Noise

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