Research Letter

Psilocybin Trends in States That Decriminalized Use

JAMA 10.1001/jama.2026.1952

March 12, 2026 at 11:00 AM EDT

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

Corresponding Author: Joshua C. Black, PhD, Rocky Mountain Poison joshua.black@rmpds.org).

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