Cannabis commercialisation not decriminalisation drives up usage, study finds (opens original article in a new tab)

A study found that commercialising cannabis increases usage and mental health issues, while decriminalisation or strict regulation does not.

• Decriminalisation or strict regulation of cannabis does not increase usage, but commercialisation leads to higher usage and mental health issues.
• Commercial cannabis markets in the US and Canada saw increased users and drug potency, along with more psychosis cases.
• Uruguay's state-controlled legal cannabis model shows no significant increase in usage or mental health problems.