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Jim Grigsby

4 papers in the library · 594 citations · publishing 2018-2026

Papers

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Effects of an international ceremonial ayahuasca retreat on the diversity and community composition of the human gut microbiome: A preliminary observational single-arm pre-post study

Brain Behavior and Immunity Integrative July 1, 2026 Lyanna R. Kessler, Lamya'a Dawud, John D. Sterrett et al.

ABSTRACT Posttraumatic stress disorder (PTSD) is a mental health condition that can develop following exposure to a traumatic event, often with persistent anxiety and depressive symptoms. Recent research suggests the microbiome-gut-brain axis may play an important role in the etiology and pathophysiology of PTSD. At the same time, retreats incorporating psychedelic-assisted therapies have...

Long-term follow-up of psilocybin-assisted psychotherapy for psychiatric and existential distress in patients with life-threatening cancer

Journal of Psychopharmacology January 9, 2020 Gabrielle Agin-Liebes, Tara C. Malone, Matthew M. Yalch et al. 353 citations

Background: A recently published randomized controlled trial compared single-dose psilocybin with single-dose niacin in conjunction with psychotherapy in participants with cancer-related psychiatric distress. Results suggested that psilocybin-assisted psychotherapy facilitated improvements in psychiatric and existential distress, quality of life, and spiritual well-being up to seven weeks prior...

3,4-Methylenedioxymethamphetamine-assisted psychotherapy for treatment of chronic posttraumatic stress disorder: A randomized phase 2 controlled trial.

Journal of psychopharmacology (Oxford, England) December 1, 2018 Marcela Ot'Alora G, Jim Grigsby, Bruce Poulter et al. 232 citations

Posttraumatic stress disorder often does not resolve after conventional psychotherapies or pharmacotherapies. Pilot studies have reported that 3,4-methylenedioxymethamphetamine (MDMA) combined with psychotherapy reduces posttraumatic stress disorder symptoms. This pilot dose response trial assessed efficacy and safety of MDMA-assisted psychotherapy across multiple therapy teams. Twenty-eight...