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Effects of Cannabis Legalization on Adolescent Cannabis Use Across 3 Studies

Published:November 10, 2022DOI:https://doi.org/10.1016/j.amepre.2022.09.019

      Introduction

      Canada, Uruguay, and 18 states in the U.S. have legalized the use of nonmedical (recreational) cannabis for adults, yet the impact of legalization on adolescent cannabis use remains unclear. This study examined whether cannabis legalization for adults predicted changes in the probability of cannabis use among adolescents aged 13–18 years.

      Methods

      Data were drawn from 3 longitudinal studies of youth (spanning 1999–2020) centered in 3 U.S. states: Oregon, New York, and Washington. During this time, Oregon (2015) and Washington (2012) passed cannabis legalization; New York did not. In each study, youth average age was 15 years (total N=940; 49%–56% female, 11%–81% Black/African American and/or Latinx). Multilevel modeling (in 2021) of repeated measures tested whether legalization predicted within- or between-person change in past-year cannabis use or use frequency over time.

      Results

      Change in legalization status across adolescence was not significantly related to within-person change in the probability or frequency of self-reported past-year cannabis use. At the between-person level, youth who spent more of their adolescence under legalization were no more or less likely to have used cannabis at age 15 years than adolescents who spent little or no time under legalization.

      Conclusions

      This study addresses several limitations of repeated cross-sectional studies of the impact of cannabis legalization on adolescent cannabis use. Findings are not consistent with changes in the prevalence or frequency of adolescent cannabis use after legalization. Ongoing surveillance and analyses of subpopulations are recommended.
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      REFERENCES

        • Hawkins JD
        • Catalano RF
        • Miller JY.
        Risk and protective factors for alcohol and other drug problems in adolescence and early adulthood: implications for substance abuse prevention.
        Psychol Bull. 1992; 112: 64-105https://doi.org/10.1037/0033-2909.112.1.64
        • Blest-Hopley G
        • O'Neill A
        • Wilson R
        • Giampietro V
        • Bhattacharyya S
        Disrupted parahippocampal and midbrain function underlie slower verbal learning in adolescent-onset regular cannabis use.
        Psychopharmacology (Berl). 2021; 238: 1315-1331https://doi.org/10.1007/s00213-019-05407-9
        • Volkow ND
        • Swanson JM
        • Evins AE
        • et al.
        Effects of cannabis use on human behavior, including cognition, motivation, and psychosis: a review.
        JAMA Psychiatry. 2016; 73: 292-297https://doi.org/10.1001/jamapsychiatry.2015.3278
        • Guttmannova K
        • Kosterman R
        • White HR
        • et al.
        The association between regular marijuana use and adult mental health outcomes.
        Drug Alcohol Depend. 2017; 179: 109-116https://doi.org/10.1016/j.drugalcdep.2017.06.016
        • Cerdá M
        • Mauro C
        • Hamilton A
        • et al.
        Association between recreational marijuana legalization in the United States and changes in marijuana use and cannabis use disorder from 2008 to 2016.
        JAMA Psychiatry. 2020; 77: 165-171https://doi.org/10.1001/jamapsychiatry.2019.3254
        • Hammond D
        • Goodman S
        • Wadsworth E
        • Rynard V
        • Boudreau C
        • Hall W.
        Evaluating the impacts of cannabis legalization: the International cannabis Policy Study.
        Int J Drug Policy. 2020; 77102698https://doi.org/10.1016/j.drugpo.2020.102698
        • Borodovsky JT
        • Lee DC
        • Crosier BS
        • Gabrielli JL
        • Sargent JD
        • Budney AJ.U.S.
        cannabis legalization and use of vaping and edible products among youth.
        Drug Alcohol Depend. 2017; 177: 299-306https://doi.org/10.1016/j.drugalcdep.2017.02.017
        • Epstein M
        • Bailey JA
        • Kosterman R
        • Furlong M
        • Hill KG.
        Evaluating the effect of retail marijuana legalization on parent marijuana use frequency and norms in U.S. states with retail marijuana legalization.
        Addict Behav. 2020; 111106564https://doi.org/10.1016/j.addbeh.2020.106564
        • Hall W.
        Alcohol and cannabis: comparing their adverse health effects and regulatory regimes.
        Int J Drug Policy. 2017; 42: 57-62https://doi.org/10.1016/j.drugpo.2016.10.021
        • Pacula RL.
        Examining the Impact of Marijuana Legalization on Marijuana Consumption: Insights From the Economics Literature.
        RAND, Santa Monica, CA2010https://doi.org/10.7249/WR770
        • Coley RL
        • Hawkins SS
        • Ghiani M
        • Kruzik C
        • Baum CF.
        A quasi-experimental evaluation of marijuana policies and youth marijuana use.
        Am J Drug Alcohol Abuse. 2019; 45: 292-303https://doi.org/10.1080/00952990.2018.1559847
        • Zuckermann AME
        • Battista KV
        • Bélanger RE
        • et al.
        Trends in youth cannabis use across cannabis legalization: data from the COMPASS prospective cohort study.
        Prev Med Rep. 2021; 22101351https://doi.org/10.1016/j.pmedr.2021.101351
        • Rotermann M.
        What has changed since cannabis was legalized?.
        Health Rep. 2020; 31: 11-20https://doi.org/10.25318/82-003-x202000200002-eng
        • Paschall MJ
        • García-Ramírez G
        • Grube JW.
        Recreational marijuana legalization and use among California adolescents: findings from a statewide survey.
        J Stud Alcohol Drugs. 2021; 82: 103-111https://doi.org/10.15288/jsad.2021.82.103
        • Dilley JA
        • Richardson SM
        • Kilmer B
        • Pacula RL
        • Segawa MB
        • Cerdá M.
        Prevalence of cannabis use in youths after legalization in Washington State.
        JAMA Pediatr. 2019; 173: 192-193https://doi.org/10.1001/jamapediatrics.2018.4458
        • Shadish WR
        • Cook TD
        • Campbell DT.
        Experimental and quasi-Experimental Designs for Generalized Causal Inference.
        Mifflin and Company, Boston, MA: Houghton2002
        • Smart R
        • Pacula RL.
        Early evidence of the impact of cannabis legalization on cannabis use, cannabis use disorder, and the use of other substances: findings from state policy evaluations.
        Am J Drug Alcohol Abuse. 2019; 45: 644-663https://doi.org/10.1080/00952990.2019.1669626
        • Rusby JC
        • Westling E
        • Crowley R
        • Light JM.
        Legalization of recreational marijuana and community sales policy in Oregon: impact on adolescent willingness and intent to use, parent use, and adolescent use.
        Psychol Addict Behav. 2018; 32: 84-92https://doi.org/10.1037/adb0000327
        • Bailey JA
        • Epstein M
        • Roscoe JN
        • Oesterle S
        • Kosterman R
        • Hill KG.
        Marijuana legalization and youth marijuana, alcohol, and cigarette use and norms.
        Am J Prev Med. 2020; 59: 309-316https://doi.org/10.1016/j.amepre.2020.04.008
        • Henry KL
        • Agbeke DV
        • Tiberio SS
        • et al.
        Does parents’ age at first birth moderate intergenerational continuity in early-onset cannabis use?.
        J Stud Alcohol Drugs. 2021; 82: 470-475https://doi.org/10.15288/jsad.2021.82.470
      1. Substance Abuse and Mental Health Services Administration. 2018–2019 National Survey on Drug Use and Health: model-based prevalence estimates (50 states and the District of Columbia). Rockville, MD: Substance Abuse and Mental Health Services Administration. https://www.samhsa.gov/data/report/2018-2019-nsduh-state-prevalence-estimates. Published December 15, 2020. Accessed December 29, 2021.

      2. National and state-level marijuana trends from 2002–2014. Substance Abuse and Mental Health Administration. https://www.samhsa.gov/data/nsduh/national-state-level-marijuana-trends. Accessed September 22, 2021.

        • Kilmer B.
        How will cannabis legalization affect health, safety, and social equity outcomes?.
        Am J Drug Alcohol Abuse. 2019; 45 (It largely depends on the 14 Ps.): 664-672https://doi.org/10.1080/00952990.2019.1611841
        • Hall W
        • Lynskey M.
        Why it is probably too soon to assess the public health effects of legalisation of recreational cannabis use in the USA.
        Lancet Psychiatry. 2016; 3: 900-906https://doi.org/10.1016/S2215-0366(16)30071-2
        • Bae H
        • Kerr DCR.
        Marijuana use trends among college students in states with and without legalization of recreational use: initial and longer-term changes from 2008 to 2018.
        Addiction. 2020; 115: 1115-1124https://doi.org/10.1111/add.14939