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Therapeutic and legal aspects of psilocybin in cancer-related depression

Wierzbicka Małgorzata, Renata Kopczyk, Alexander L. Gerlach, Joanna Rymaszewska

Frontiers in Psychiatry August 4, 2025 DOI: 10.3389/fpsyt.2025.1591864 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Review Peer reviewed
Intervention Psilocybin
Topics Anxiety Depression Psilocybin
Keywords Antidepressant Context archaeology Psychological intervention Hallucinogen Mood
Citations 1
Key findings Psilocybin shows rapid antidepressant effects within hours and outperforms escitalopram in major depressive disorder, but no studies have explored its perioperative use in head and neck cancer patients, who face high depression rates and limited time for conventional treatments.

Abstract

Depression prevalence is markedly elevated in oncological patients, particularly among head and neck cancer (HNC) cohorts, who face twice the prevalence of major depressive disorder (MDD) compared to other cancer populations. MDD in this context independently predicts poorer clinical outcomes and increased morbidity. HNC management often involves acute surgical interventions with disfiguring effects, creating a narrow therapeutic window for conventional antidepressants requiring weeks to achieve efficacy. Psychological interventions face similar time constraints, complicating perioperative mental health support. Psilocybin – metabolized to psilocin – modulates serotonin (5-HT2A) and dopamine receptors, demonstrating rapid antidepressant effects within hours rather than weeks. Clinical trials validate its superiority over escitalopram in MDD treatment and efficacy in PTSD and treatment-resistant depression. Despite these benefits, no studies explore perioperative applications in HNC patients. Psilocybin lacks international scheduling under UN conventions, permitting variable national policies: Australia - MDMA/psilocybin prescriptions (2023), USA - Insurance billing codes (2024), Portugal - Decriminalized, South Africa - Prescription medicine. In Polish Context psilocybin remains restricted to research settings, classified as a Group I-P substance under the 1971 Psychotropic Convention. This legal framework complicates clinical implementation despite emerging evidence of therapeutic potential. The critical challenge lies in reconciling psilocybin’s rapid antidepressant properties with regulatory barriers, particularly for HNC patients requiring immediate psychiatric support post-surgery. Interdisciplinary collaboration between oncologists, psychiatrists, and policymakers is essential to design ethical clinical pathways under current legislative constraints.

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