Psilocybin Trends in States That Decriminalized Use
Joshua C. Black, Gabrielle E. Bau, Ryan Cook, Elizabeth A Bemis, Andrew A. Monte
JAMA March 12, 2026 DOI: 10.1001/jama.2026.1952 (opens in new tab) via OpenAlex
Summary
AI-generated from the abstractAfter 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.
Study at a glance
| Characteristics | Survey study Peer reviewed |
|---|---|
| Population | Residents of Oregon and Colorado |
| Topics | Psilocybin |
| Keywords | Medicine Hallucinogen Medline |
| Citations | 2 |
| Key finding | Decriminalization of psilocybin in Oregon and Colorado was associated with an increase in 12-month psilocybin use. |
Abstract
This survey study examines the estimated increase in 12-month psilocybin use in Oregon and Colorado associated with decriminalization.