Psilocybin Trends in States That Decriminalized Use

Joshua C. Black, Gabrielle E. Bau, Ryan Cook, Elizabeth A Bemis, Andrew A. Monte

Study at a glance

Characteristics	Survey study Peer reviewed
Population	Residents of Oregon and Colorado
Topics	Psilocybin
Keywords	Hallucinogen Medline
Citations	2
Key findings	Decriminalization of psilocybin in Oregon and Colorado was associated with an increase in 12-month psilocybin use.

This survey study examines the estimated increase in 12-month psilocybin use in Oregon and Colorado associated with decriminalization.

Other cross-sectional and survey studies on psilocybin, most cited first.

Study	Year	Design	Participants
Survey study of challenging experiences after ingesting psilocybin mushrooms: Acute and enduring positive and negative consequences Individuals who had consumed psilocybin mushrooms and experienced a psychologically...	2016	Cross-sectional survey	n = 1,993
The Challenging Experience Questionnaire: Characterization of challenging experiences with psilocybin mushrooms Internet survey respondents reporting challenging experiences with psilocybin	2016	Questionnaire development and validation
Psychedelics and Mental Health: A Population Study Adult population in the United States	2013	Cross-sectional survey	n = 130,152
Cessation and reduction in alcohol consumption and misuse after psychedelic use Individuals with prior alcohol use disorder who reported cessation or reduction in...	2019	Cross-sectional survey	n = 343
Patterns of simultaneous polysubstance use in drug using university students Drug-using university students	2006	Cross-sectional survey	n = 149