Koshering Psychedelics: Ayahuasca in the Ultra-Orthodox (Haredi) Jewish World

Background: Despite the rapid growth of psychedelic research, limited attention has been given to how psychedelics are used, experienced and integrated within highly conservative religious communities, and in Jewish contexts more broadly. This study addresses this gap by examining ayahuasca use among the ultra-Orthodox (Haredi) community, a highly religious, conservative, and collectivist Jewish group.

Methods: This study used inductive thematic analysis of interviews with Haredi participants in Israel and the US (N = 23; age range: 21–60; 8 women), supplemented by participant observation and analysis of religious materials.

Results: Six themes were identified: (a) settings: Haredi ayahuasca ceremonies were adapted to Jewish contexts; (b) motivations: use was primarily therapeutic; (c) acute ayahuasca experiences: experiences included distinct Jewish and Jewish mystical visionary content; (d) longer term religious effects: ayahuasca was linked to strengthened belief, connection to Judaism, and changes in religious practice; (e) religious tensions: included ayahuasca’s perceived foreignness to Haredi life, concerns about idolatry, mixed gender participation, and competing structures of authority (experience vs. text); and (f) strategies for addressing tensions: included medicalization, “koshering” ayahuasca’s set, setting, and experience (i.e., making them religiously permissible), and framing ceremonies as liminal spaces.

Conclusions: This study broadens the scope of psychedelic science by examining ayahuasca use in a highly religious Orthodox context rarely included in the field. The findings show how ayahuasca settings, experiences, and long term effects are translated through Haredi and Jewish structures, involve religious tensions and resolutions, and highlight psychedelics’ contextual flexibility and continued diffusion into understudied populations.