Frontiers in Public Health
April 14, 2026
Anthony L. Back, Bonnie A. Mcgregor, Leslie L. Thorn et al.
Introduction: Psilocybin therapy has demonstrated efficacy for cancer-related anxiety and depression, but resource-intensive individual treatment models raise important questions for psychedelic public health about equitable access and scalability. In our prior Phase 1/2 study of group retreat psilocybin therapy for patients with metastatic cancer, we observed partial responders who did not...
Psychedelic Medicine
January 18, 2026
Anthony L. Back, Bonnie A. Mcgregor, Leslie Lazar Thorn et al.
1 citation
Background: Psilocybin is a promising therapy for cancer-related distress, but existing individual treatment models are resource intensive. In this study, we designed and tested a group model of psilocybin therapy for people with metastatic cancer and cancer-related anxiety and depression. Method: Eligibility criteria included metastatic cancer, moderate-to-severe symptoms of anxiety or...
Psychopharmacology
October 11, 2025
Michelle St Pierre, Elena Argento, Jordyn Cates et al.
Repeated self-administration of small doses of psychedelics, known as microdosing, has been associated with perceived improvements in psychological functioning. However, few studies have examined effects at the daily level. Drawing on data from a naturalistic, prospective, international survey of adults who microdose (N = 1435), we assessed self-reported within-person changes between...
JAMA Network Open
December 5, 2024
Anthony L. Back, Timara K Freeman-Young, Ladybird Morgan et al.
37 citations
Importance The psychological morbidity experienced by physicians, advanced practice practitioners (APPs), and nurses from working during the COVID-19 pandemic includes burnout, depression, and posttraumatic stress disorder (PTSD). Objective To investigate whether psilocybin therapy could improve symptoms of depression, burnout, and PTSD in US clinicians who developed these symptoms from...
Sci Rep
July 28, 2022
Joseph M. Rootman, Maggie Kiraga, Pamela Kryskow et al.
2 citations
Author Correction: Psilocybin microdosers demonstrate greater observed improvements in mood and mental health at one month relative to non-microdosing controls.
Scientific Reports
June 30, 2022
Joseph M. Rootman, Maggie Kiraga, Pamela Kryskow et al.
53 citations
Abstract Psilocybin microdosing involves repeated self-administration of mushrooms containing psilocybin at doses small enough to not impact regular functioning. Microdose practices are diverse and include combining psilocybin with substances such as lion’s mane mushrooms (Hericium erinaceus; HE) and niacin (vitamin-B3). Public uptake of microdosing has outpaced evidence, mandating further...
Scientific Reports
November 18, 2021
Joseph M. Rootman, Pamela Kryskow, Kalin Harvey et al.
78 citations
Abstract The use of psychedelic substances at sub-sensorium ‘ microdoses’, has gained popular academic interest for reported positive effects on wellness and cognition. The present study describes microdosing practices, motivations and mental health among a sample of self-selected microdosers ( n = 4050) and non-microdosers ( n = 4653) via a mobile application. Psilocybin was the most commonly...