Study finds commercial cannabis markets linked to increased usage and mental health issues, unlike decriminalization
By
Ian Sample
Summary
A review analyzing cannabis policy shifts between 2000 and 2025 found that decriminalization and strict medical regulation do not appear to increase usage, but commercial markets (as seen in the US and Canada) are associated with more users and higher rates of psychosis and mental health problems. The study distinguishes between different policy approaches and their public health outcomes.
Source
bskyStudy finds commercial cannabis markets linked to increased usage and mental health issues, unlike decriminalizationtheguardian.comKey quotes
· 3 pulledDecriminalising the possession of cannabis or strictly regulating access to the drug do not appear to drive up usage, but when the drug is sold commercially the number of users increases and more mental health problems are seen, a review has found.
In places that opened up commercial markets for cannabis, such as the US and Canada, researchers saw more users and increases in drug
An international team analysed the dramatic shift in policies on cannabis between 2000 and 2025, including how the numbers of people taking the drug, its potency, and rates of psychosis changed after new rules came in.
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