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January 17, 2026Addiction

Authorization of storefront recreational cannabis retailers and cannabis‐related healthcare encounters: A local‐level spatial difference‐in‐differences analysis in California, United States

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Authors

BHBing HanUniversity of California, San DiegoCGChristian GunadiHuman Longevity (United States)YSYuyan ShiUniversity of California, San Diego

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Implication

Local-level analysis finds reduced poison center calls in neighboring cities after cannabis retailer authorization.

Key Points

  • Examine the link between storefront cannabis retailer authorization and healthcare visits related to cannabis in California.
  • Analyzed secondary data from 482 California cities (2010-2020)
  • Applied a spatial difference-in-differences model
  • Controlled for sociodemographic factors and city-level policies
  • No significant change in emergency visits or inpatient discharges in cities with authorized retailers
  • 6.75 percentage point decrease in poison center calls in neighboring cities after authorization
  • Indicates potential influence of local cannabis policies beyond immediate areas

Cite This Study

Han et al. (2026) studied this question.

synapsesocial.com/papers/696b26d7d2a12237a934a1a6https://doi.org/10.1111/add.70318
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Also Consider

Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1A Clinical Framework for Evaluating Cannabis Product Quality and Safety2022 · 28 citations
  2. 2Availability of medical cannabis dispensaries and cannabis abuse/dependence‐related hospitalizations in California2021 · 27 citations
  3. 3Associations between Local Jurisdiction Ordinances and Current Use of Cannabis Products in California Adolescents2021 · 8 citations
  4. 4Understanding Local Control in the Wake of State Adult-Use Cannabis Liberalization: A Content Analysis of State Statutes2023 · 7 citations