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Study breakdown

Medical Cannabis Laws Were Linked to Declining Specialty Treatment for Cannabis Use Disorder

Longitudinal CohortStrong evidence
The takeaway

States with medical cannabis dispensaries saw significant declines in specialty CUD treatment in 2004-2014, partly driven by people without active CUD leaving treatment.

Policy researchers, addiction treatment providers, and state health officials.

CUD treatment decreased 2.15 points in dispensary states (2004-2014); no effect by 2015-2019

What the researchers found

CUD treatment decreased 2.15 points after MCL with dispensaries (2004-2014). Among active CUD patients, declines occurred only in dispensary states. By 2015-2019, associations were no longer significant.

Why it matters

If cannabis policy reduces treatment uptake among those who need it, this is a public health concern. Understanding the mechanism is critical.

The numbers in context

Treatment decreased 2.15 points after MCL with dispensaries (2004-2014). Among CUD patients: -0.91 points in dispensary states. No MCL effects 2015-2019.

How the study worked

Multi-level logistic regression using restricted-use 2004-2019 NSDUH data for people aged 12+ classified as needing CUD treatment.

What this study cannot tell us

Observational. Self-report NSDUH. CUD criteria changed with DSM-5. Multiple simultaneous policy changes.

How to read the evidence

Large nationally representative dataset with multi-level modeling, but observational design.

When this study was published

Published in 2024 with 2004-2019 data.

The bigger picture

The decline may reflect reduced stigma, fewer criminal referrals, or normalization. Active CUD patients were less affected.

Questions still open

  • Are people managing CUD without formal help?
  • Has reduced criminal justice involvement offset treatment decline?

Common questions

Did medical marijuana laws reduce treatment for cannabis problems?
Dispensary states saw significant treatment declines 2004-2014, but the effect disappeared by 2015-2019.
Are fewer people getting help for cannabis addiction?
Specialty CUD treatment has declined nationally, but much of the decrease involved people without active CUD.

Read the original research

Associations between cannabis policies and state-level specialty cannabis use disorder treatment in the United States, 2004-2019.

Drug and alcohol dependence, 257, 111113

Citation

Mauro, Pia M; Gutkind, Sarah; Askari, Melanie S; Hasin, Deborah S; Samples, Hillary; Mauro, Christine M; Annunziato, Erin M; Boustead, Anne E; Martins, Silvia S. (2024). Associations between cannabis policies and state-level specialty cannabis use disorder treatment in the United States, 2004-2019.. Drug and alcohol dependence, 257, 111113. https://doi.org/10.1016/j.drugalcdep.2024.111113

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