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The Public Health Effects of Legalizing Marijuana

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  • D. Mark Anderson
  • Daniel I. Rees

Abstract

Thirty-six states have legalized medical marijuana and 14 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 post-treatment data are collected in states that have recently legalized recreational marijuana.

Suggested Citation

  • D. Mark Anderson & Daniel I. Rees, 2021. "The Public Health Effects of Legalizing Marijuana," NBER Working Papers 28647, National Bureau of Economic Research, Inc.
  • Handle: RePEc:nbr:nberwo:28647
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    Cited by:

    1. Abouk, Rahi & Courtemanche, Charles & Dave, Dhaval & Feng, Bo & Friedman, Abigail S. & Maclean, Johanna Catherine & Pesko, Michael F. & Sabia, Joseph J. & Safford, Samuel, 2023. "Intended and unintended effects of e-cigarette taxes on youth tobacco use," Journal of Health Economics, Elsevier, vol. 87(C).
    2. Fone, Zachary S. & Sabia, Joseph J. & Cesur, Resul, 2023. "The unintended effects of minimum wage increases on crime," Journal of Public Economics, Elsevier, vol. 219(C).
    3. Armstrong, Michael J., 2023. "Relationships between sales of legal medical cannabis and alcohol in Canada," Health Policy, Elsevier, vol. 128(C), pages 28-33.
    4. Mir M. Ali & Chandler McClellan & Ryan Mutter & Daniel I. Rees, 2023. "Recreational marijuana laws and the misuse of prescription opioids: Evidence from National Survey on Drug Use and Health microdata," Health Economics, John Wiley & Sons, Ltd., vol. 32(2), pages 277-301, February.
    5. Smart, Rosanna & Doremus, Jacqueline, 2023. "The kids aren’t alright: The effects of medical marijuana market size on adolescents," Journal of Health Economics, Elsevier, vol. 87(C).

    More about this item

    JEL classification:

    • I1 - Health, Education, and Welfare - - Health
    • I12 - Health, Education, and Welfare - - Health - - - Health Behavior
    • I18 - Health, Education, and Welfare - - Health - - - Government Policy; Regulation; Public Health
    • K42 - Law and Economics - - Legal Procedure, the Legal System, and Illegal Behavior - - - Illegal Behavior and the Enforcement of Law

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