Psilocybin Trends in States That Decriminalized Use
JAMA March 12, 2026 Joshua C. Black, Gabrielle E. Bau, Ryan R. Cook et al. 2 citations
After Oregon and Colorado decriminalized psilocybin, 12-month use of the substance increased in both states. The survey data show that the estimated prevalence of past-year psilocybin use rose in Oregon and Colorado compared with the period before decriminalization. The findings suggest that decriminalization policies are associated with higher rates of psilocybin use.