Cannabis Use Among Individuals With Psychosis Increased After State-Level Commercial Legalization

Thirty-day cannabis use increased by 9.53 percentage points among individuals with psychosis after state-level legalization of commercial cannabis, according to a recent study. This is substantially larger than the 3.3 percentage-point increase observed in the general population after legalization. The difference in post-legalization use is cause for concern, but it is unknown whether this will translate into negative health consequences, the researchers wrote.

The study used data from 2014 to 2022 on state-level recreational cannabis legalization with five years of follow-up from the Population Assessment of Tobacco and Health (PATH) study, a . . .