ArticleThe International journal on drug policy2026
Cannabis legalization and law enforcement drug seizures: a state-level analysis of cannabis policy effects on cannabis seizures in the United States, 2010-2023.
Article in The International journal on drug policy, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
Abstract
backgroundIn the US, 40 states and the District of Columbia (DC) have implemented medical cannabis legalization (MCL), while 24 states and DC have enacted some form of recreational cannabis legalization (RCL). We examined the association between cannabis legalization and law enforcement cannabis seizures to understand illegal drug market responses to increasing state cannabis legalization.
methodsData on law enforcement cannabis seizures came from the High Intensity Drug Trafficking Areas (HIDTA) program. We tested the association between state-level RCL and MCL adoption and annual changes in cannabis seizures aggregated by state-year from 2010 to 2023 using a series of Poisson regression models that controlled for time-varying state demographic and law enforcement variables in addition to state and year fixed effects. To account for potential lag time between MCL/RCL effective dates and policy impacts on seizures, we conducted additional analyses with 1-year MCL/RCL lags.
resultsOver the study period, there were 286,844 cannabis seizures by HIDTA-affiliated agencies, with 686 state-years of observation. In primary adjusted models, RCL adoption was associated with a significant decrease in cannabis seizures in MCL & RCL states versus MCL-only states, both immediately following RCL adoption (exp(β)=0.55, 95% CI: 0.54, 0.56) and one year after RCL went into effect (exp(β) for 1-year lag=0.62, 95% CI: 0.61, 0.64).
conclusionsThe adoption of RCLs in US states, beyond only MCLs, may help to reduce the size of illegal cannabis markets, or there may be shifting law enforcement seizure priorities in those states.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.