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Anya Ragnhildstveit

11 papers in the library · 84 citations · publishing 2021-2026

Papers

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Psilocybin-Assisted Therapy for Adolescent Anorexia Nervosa: Clinical Considerations and Emerging Models of Care.

Current Psychiatry Reports May 14, 2026 Jamarie Geller, Rachel M Pacilio, Amanda E. Downey et al.

There is growing evidence that psychedelics and associated treatment modalities may offer therapeutic benefits across a range of psychiatric conditions. Anorexia nervosa (AN), a serious and often treatment-resistant illness associated with significant morbidity and mortality, is one such condition for which psilocybin-assisted therapy (PAT) may hold promise. To date, research on PAT for AN has...

Microdosing psilocybin for major depressive disorder: study protocol for a phase II double-blind placebo-controlled randomised partial crossover trial

BJPsych Open February 16, 2026 Zeina Beidas, Anya Ragnhildstveit, Adam Blackman et al. 1 citation

BACKGROUND: Major depressive disorder (MDD) is the leading cause of disability worldwide, affecting roughly 322 million people. Recently, doses of psilocybin have shown promise in treating mood disorders, sparking interest in other dosing practices. According to anecdotal reports and observational studies, microdosing psilocybin yields benefits to mental health; however, rigorously controlled...

Microdosing Psilocybin for Major Depressive Disorder: Study Protocol for a Phase II Double-Blind Placebo-Controlled Randomized Partial Crossover Trial

November 16, 2025 Zeina Beidas, Anya Ragnhildstveit, Adam Blackman et al. preprint

Background: Major depressive disorder (MDD) is the leading cause of disability worldwide, affecting roughly 322 million people. Recently, doses of psilocybin have shown promise in treating mood disorders, sparking interest in other dosing practices. According to anecdotal reports and observational studies, microdosing psilocybin yields benefits to mental health; however, rigorously controlled...

5-MeO-DMT for post-traumatic stress disorder: a real-world longitudinal case study

Frontiers in Psychiatry November 23, 2023 Anya Ragnhildstveit, Ryan Khan, Paul Seli et al. 17 citations

Psychedelic therapy is, arguably, the next frontier in psychiatry. It offers a radical alternative to longstanding, mainstays of treatment, while exciting a paradigm shift in translational science and drug discovery. There is particular interest in 5-methoxy- N,N -dimethyltryptamine (5-MeO-DMT)—a serotonergic psychedelic—as a novel, fast-acting therapeutic. Yet, few studies have directly...

Cannabis-assisted psychotherapy for complex dissociative posttraumatic stress disorder: A case report

Frontiers in Psychiatry February 9, 2023 Anya Ragnhildstveit, Miriam Kaiyo, Matthew Brian Snyder et al. 10 citations

Background A dissociative subtype of posttraumatic stress disorder, known as “D-PTSD”, has been included in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition. In addition to meeting criteria for PTSD, patients endorse prominent dissociative symptoms, namely depersonalization and derealization, or detachment from one's self and surroundings. At present, this population is...

Breathwork Interventions for Adults with Clinically Diagnosed Anxiety Disorders: A Scoping Review.

Brain Sciences February 2, 2023 Blerida Banushi, Madeline Brendle, Anya Ragnhildstveit et al.

Anxiety disorders are the most common group of mental disorders, but they are often underrecognized and undertreated in primary care. Dysfunctional breathing is a hallmark of anxiety disorders; however, mainstays of treatments do not tackle breathing in patients suffering anxiety. This scoping review aims to identify the nature and extent of the available research literature on the efficacy of...

Registered clinical trials investigating ketamine and esketamine for treatment-resistant depression: A systematic review

Journal of Psychedelic Studies January 16, 2023 Madeline Brendle, Anya Ragnhildstveit, Matthew Slayton et al. 7 citations

Ketamine and esketamine have garnered interest in both psychiatric research and clinical practice for treatment-resistant depression (TRD). In this review, we examined registered trials investigating the therapeutic use of ketamine or esketamine for TRD, with the aim of characterizing emerging trends and knowledge gaps.The ClinicalTrials.gov electronic registry and results database was queried...

The potential of ketamine for posttraumatic stress disorder: a review of clinical evidence.

Therapeutic Advances in Psychopharmacology 2023 Anya Ragnhildstveit, Jeremy Roscoe, Lisa C. Bass et al. 49 citations

Posttraumatic stress disorder (PTSD) is a devastating condition, for which there are few pharmacological agents, often with a delayed onset of action and poor efficacy. Trauma-focused psychotherapies are further limited by few trained providers and low patient engagement. This frequently results in disease chronicity as well as psychiatric and medical comorbidity, with considerable negative...

Ketamine as a Novel Psychopharmacotherapy for Eating Disorders: Evidence and Future Directions.

Brain Sciences March 12, 2022 Anya Ragnhildstveit, Matthew Slayton, Laura Kate Jackson et al.

Eating disorders (EDs) are serious, life-threatening psychiatric conditions associated with physical and psychosocial impairment, as well as high morbidity and mortality. Given the chronic refractory nature of EDs and the paucity of evidence-based treatments, there is a pressing need to identify novel approaches for this population. The noncompetitive N-methyl-D-aspartate receptor (NMDAr)...

Case Report: Unexpected Remission From Extreme and Enduring Bulimia Nervosa With Repeated Ketamine Assisted Psychotherapy.

Frontiers in Psychiatry 2021 Anya Ragnhildstveit, Laura Kate Jackson, Sarah Cunningham et al.

Background: Bulimia nervosa is a disabling psychiatric disorder that considerably impairs physical health, disrupts psychosocial functioning, and reduces overall quality of life. Despite available treatment, less than half of sufferers achieve recovery and approximately a third become chronically ill. Extreme and enduring cases are particularly resistant to first-line treatment, namely...