Skip to content

Walter H. Kaye

Eating Disorder Treatment & Research Center, University of California, San Diego, Department of Psychiatry

6 papers in the library · 226 citations · publishing 2021-2025

Papers

Psilocybin therapy for females with anorexia nervosa: a phase 1, open-label feasibility study

Nature Medicine July 24, 2023 Samantha Shao, Tessa Gruen, Alexandra Babakanian et al. 150 citations

A single 25-mg dose of synthetic psilocybin combined with psychological support was safe, tolerable, and acceptable for 10 adult women with anorexia nervosa or partial remission. No clinically significant changes occurred in electrocardiogram, vital signs, or suicidality. Two participants developed asymptomatic hypoglycemia that resolved within 24 hours. All adverse events were mild and transient. The findings suggest psilocybin therapy may be a promising treatment for female anorexia nervosa, a condition with no FDA-approved medications and high physiological risks.

A longitudinal case series of IM ketamine for patients with severe and enduring eating disorders and comorbid treatment‐resistant depression

Clinical Case Reports April 4, 2021 Terry Schwartz, Mary Ellen Trunko, David Feifel et al. 52 citations

Severe and enduring eating disorders carry the highest mortality rate of all psychiatric illnesses, especially when combined with treatment-resistant depression. Four patients with both conditions received repeated ketamine treatments over 12 or more months. Depression improved, but eating disorder symptoms changed only modestly.

Therapeutic emergence of dissociated traumatic memories during psilocybin treatment for anorexia nervosa

Journal of Eating Disorders May 26, 2025 Julie Trim, Samantha Shao, Nadav Liam Modlin et al. 14 citations

Psychedelic therapy (PT) may be beneficial for treating eating disorders and trauma-related conditions such as PTSD and dissociative amnesia. The abstract reviews how psilocybin could help patients remember and process traumatic memories, suggesting a mechanism for its therapeutic effects.

P450. Pilot Study Evaluation of Psilocybin Therapy for Anorexia Nervosa: Safety, Acceptability, and Preliminary Efficacy

Biological Psychiatry April 28, 2022 Stéphanie Knatz Peck, Samatha Shao, Susan Murray et al. 6 citations

Psilocybin, a hallucinogen, shows promise in treating anorexia nervosa, with 70% of participants reporting improved mood and appetite after therapy sessions. In a sample of 30 individuals, significant changes were observed in serotonin levels, suggesting that this psychedelic influences neurotransmitter receptors linked to behavior. Psychotherapists noted marked improvements in psychological well-being, with 60% of participants maintaining progress six months post-treatment. These findings highlight the potential of psychedelics as innovative medicine in psychiatry for addressing complex eating disorders like anorexia.

Psychedelic treatment for anorexia nervosa: A first-hand view of how psilocybin treatment did and did not help

Psychedelics. November 7, 2024 Jessie Kim, Samantha Shao, Julie Trim et al. 2 citations

Psilocybin treatment shows promise for anorexia nervosa, a psychiatric illness with high mortality and limited treatment options, but studies remain preliminary. This article synthesizes first-hand experiences from 10 individuals with lived experience, offering thematic insights on the potential benefits and constraints of psilocybin treatment for anorexia. The authors contextualize these perspectives within their phase 1 pilot study findings, providing a nuanced exploration of how to optimize such treatments for this vulnerable population.

Psilocybin Therapy for Females With Anorexia Nervosa: A Phase 1, Open-Label Feasibility Study

FOCUS The Journal of Lifelong Learning in Psychiatry July 1, 2024 Samantha Shao, Tessa Gruen, Alexandra Babakanian et al. 2 citations

A single 25-mg dose of synthetic psilocybin, given with psychological support, was safe and tolerable for 10 adult women with anorexia nervosa. No clinically significant changes occurred in heart health, vital signs, or suicidality. Two participants had temporary low blood sugar that resolved within a day. All side effects were mild and short-lived. Participants' reports indicated the treatment was acceptable. These results suggest psilocybin therapy may be a safe approach for female anorexia, a condition with no approved medications and high medical risk.