Hallucinogen use in the United States, 2021–2023: Diverging trends and subgroup patterns

Despite stable overall hallucinogen prevalence, significant increases were observed for ketamine alongside declines for LSD, suggesting a shifting landscape of hallucinogen use. Substance-specific monitoring may better inform screening, prevention, and harm-reduction efforts than aggregate hallucinogen indicators, especially as ketamine's medical availability expands and disparities in access to mental health treatment persist.