A Canadian study finds no link between the opening of legal cannabis stores and crime in the surrounding area. The result fits with earlier research. Anyone who wants to cite it should, however, know how narrow the data basis is.
📑 Inhaltsverzeichnis
The study was published in the International Journal of Drug Policy, titled „Crime levels near federally legal cannabis stores in two Canadian cities“, DOI 10.1016/j.drugpo.2026.105529. It examined crime within a radius of up to 3,000 metres around legal cannabis stores in Toronto and Ottawa, in each case in the months before and after opening.
The result: no significant associations between crime levels and the opening. The author attributes fluctuations in case numbers predominantly to the weather; crime rose on warmer days.
What the study is not
When it is passed on, this quickly becomes „the opening of licensed retail outlets in Toronto and Ottawa“. That sounds like a comparison of cities with many locations. In fact, as the title already indicates, it concerns two cities and one store each.
This is not a criticism of the work, which names its own scope. But it changes what can be demonstrated with it. Two locations do not allow any statement about cities, regions or even legalisation as a whole. They allow the statement that at these two places, nothing conspicuous showed up after the opening.
Anyone who uses the study against the claim that cannabis stores attract crime is therefore doing so with slim evidence. Conversely, the same applies: anyone who claims the opposite has these two cases against them.
The weather explanation is the more interesting part
That crime fluctuates with temperature is well established in criminology and is regularly overlooked in debates about individual locations. Anyone who compares case numbers before and after an opening without adjusting for seasonal effects may be measuring nothing but spring.
This is the truly transferable point for the German debate, in which local figures are used to argue about distance rules and consumption-ban zones. A change on the ground proves little in itself, as long as it has not been shown that it would not have occurred without the opening as well.
Placing it in the existing research
The result joins other studies that likewise found no effects in places where many had bet on them. A survey of 35,957 people found no surge in consumption after the German Cannabis Act. The Dutch Wietexperiment brought more choice, but unchanged consumption. And a study of Chilean cannabis social clubs showed how strongly such structures are regionally concentrated.
What these studies share is less a finding than a lesson: the large expected effects, in either direction, often do not appear in the data. That is unspectacular and therefore rarely a headline.
Source: Armstrong, „Crime levels near federally legal cannabis stores in two Canadian cities“, International Journal of Drug Policy, November 2026 issue, DOI 10.1016/j.drugpo.2026.105529. Summary reporting by NORML; newsletter of the Branchenverband Cannabiswirtschaft of 21 October 2026. As of: 21 October 2026.
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