European Psychiatry
2026
Shakila Meshkat, Qiaowei Lin, Rachel Sousa-Ho et al.
Abstract Background Psychedelic-assisted psychotherapy has shown potential for psychiatric disorders. However, the magnitude of symptom change in control groups remains poorly understood. We aim to evaluate within-group effects in control groups and compare them to treatment groups in psychedelic trials. Methods A systematic search was conducted up to 1 July 2025. The study protocol was...
Psychedelic Medicine
April 28, 2025
Shakila Meshkat, Howell Fang, Rachel Sousa-Ho et al.
Introduction: High-dose psilocybin has shown potential in treating various psychiatric disorders, but its perceptual and cognitive effects, along with the risk of adverse events, highlight the need for alternative treatment approaches. One such approach is the use of low-dose psilocybin, which does not significantly alter cognition or perception. While low-dose psilocybin has garnered growing...
PLoS One
January 17, 2025
Shakila Meshkat, Wendy Lou, Rakesh Jetly et al.
10 citations
Background Posttraumatic stress disorder (PTSD) affects 3.9% of the general population. While massed cognitive processing therapy (CPT) has demonstrated efficacy in treating chronic PTSD, a substantial proportion of patients still continue to meet PTSD criteria after treatment, highlighting the need for novel therapeutic approaches. Preliminary evidence supports the potential therapeutic action...
Journal of Affective Disorders
August 1, 2023
Richard J. Zeifman, Anne C Wagner, Candice M Monson et al.
56 citations
Psilocybin therapy is receiving attention as a mental health intervention with transdiagnostic potential. In line with psychotherapeutic research, qualitative research has highlighted the role of reductions in experiential avoidance (and increases in connectedness) within psilocybin therapy. However, no quantitative research has examined experiential avoidance as a mechanism underlying...
Frontiers in Psychiatry
2021
Anne C Wagner, Rachel E Liebman, Ann T Mithoefer et al.
40 citations
Healing from trauma occurs in a relational context, and the impacts of traumatic experiences that result in post-traumatic stress disorder (PTSD) go beyond the diagnosis itself. To fully understand a treatment for PTSD, understanding its impact on interpersonal, relational, and growth outcomes yields a more fulsome picture of the effects of the treatment. The current paper examines these...
European Journal of Psychotraumatology
December 7, 2020
Candice M Monson, Anne C Wagner, Ann T Mithoefer et al.
90 citations
Cognitive-behavioural conjoint therapy (CBCT) for PTSD has been shown to improve PTSD, relationship adjustment, and the health and well-being of partners. MDMA (3,4-methylenedioxymethamphetamine) has been used to facilitate an individual therapy for PTSD. This study was an initial test of the safety, tolerability, and efficacy of MDMA-facilitated CBCT. Six couples with varying levels of...
Journal of Psychoactive Drugs
2019
Anne C Wagner, Michael C Mithoefer, Ann T Mithoefer et al.
92 citations
Treatments for posttraumatic stress disorder (PTSD) have evolved significantly in the past 35 years. From what was historically viewed as a pervasive, intractable condition have emerged multiple evidence-based intervention options. These treatments, predominantly cognitive behavioral in orientation, provide significant symptom improvement in 50-60% of recipients. The treatment of PTSD with...