Abstract
Background
Terminally ill patients may experience existential distress, depression, or anxiety, limiting quality of life in the final stage. Existing psychotherapeutic or pharmacological interventions have (time) limited efficacy. Psychedelic treatment may be a safe and effective alternative treatment option.
Aim
Systematically review studies on psychedelic treatment with and without psychotherapy for existential distress, depression, and anxiety in terminally ill patients.
Methods
Medline, PsycINFO, and Embase were searched for original-data studies on the treatment of depression, anxiety, and existential distress with classical or a-typical psychedelics in patients with a terminal illness, using Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines.
Results
A total of 1850 records were screened, and 33 articles were included in this review: 14 studies on classical psychedelics (DPT, LSD, and psilocybin) and 19 studies on atypical psychedelics (MDMA and ketamine). Results of early pre-post studies are promising but have serious methodological flaws. Recent (controlled) trials with LSD, psilocybin, ketamine, and MDMA are of higher methodological quality and indicate positive effects on existential and spiritual well-being, quality of life, acceptance, and reduction of anxiety and depression with few adverse and no serious adverse effects.
Conclusions
Both classical and a-typical psychedelics are promising treatment options in patients with terminal illness. To draw final conclusions on effectiveness and safety of psychedelics, we need larger high-quality studies for classical psychedelics and MDMA. Ketamine studies should pay more attention to existential dimensions of well-being and the psychotherapeutic context of the treatment.
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Change history
17 June 2023
A Correction to this paper has been published: https://doi.org/10.1007/s00213-023-06406-7
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All authors conceived the project and collaborated on the methodology. NS developed the search queries, performed the searches, and drafted the manuscript; NS and JB collected and selected the data. All authors analyzed the data and revised the manuscript.
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NS, JB, SM, and WB have no conflicts of interest to declare. JV received a speakers fee from Janssen Pharmaceuticals, outside the submitted work. RS received research funding for two randomized clinical trials with generic oral esketamine from the Netherlands Organisation for Health Research and Development and the National Health Care Institute, a speakers fee from Janssen Pharmaceuticals, and consultancy fee from Clexio biosciences, both outside the submitted work.
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Appendix Search terms
Appendix Search terms
Database | Search query |
---|---|
Pubmed | ("Hallucinogens"[Mesh] OR "Hallucinogens" [Pharmacological Action] OR "Ketamine"[Mesh] OR "Esketamine" [Supplementary Concept] OR "Esketamine" OR "N-methylketamine" [Supplementary Concept] OR “N-methylketamine” OR "2-Oxo-PCE" [Supplementary Concept] OR “2-Oxo-PCE “ OR "Lysergic Acid Diethylamide"[Mesh] OR lsd[tiab] OR Dipropyltryptamine[tiab] OR Hallucinogen*[tiab] OR psychedelic*[tiab] OR ketamine[tiab] OR MDMA[tiab] OR "N-Methyl-3,4-methylenedioxyamphetamine"[Mesh] OR "methylenedoxyamphetamine demethylenase" [Supplementary Concept]) AND ("Depression"[Mesh] OR "Adjustment Disorders"[Mesh] OR "Major Depressive Disorder 1" [Supplementary Concept] OR "Anxiety"[Mesh] OR depress*[tiab] OR anxiet*[tiab] OR existential*[tiab] OR psychol*[tiab] OR stress*[tiab] OR distress*[tiab] OR "fear of death"[tiab] OR "Demoralization"[Mesh] OR "Psychological Distress"[Mesh] OR "Mental Disorders"[Mesh]) AND ("Palliative Care"[Mesh] OR "Hospice and Palliative Care Nursing"[Mesh] OR "Palliative Medicine"[Mesh] OR "Neoplasms"[Mesh] OR "Terminal Care"[Mesh] OR palliative[tiab] OR terminal*[tiab] OR life-threaten*[tiab] OR end-of-life[tiab] OR cancer*[tiab] OR dying[tiab] OR tumor[tiab] OR advanced malignanc*[tiab] OR hospice[tiab]) NOT ("animals"[MeSH] NOT "humans"[MeSH]) |
EMbase | ('psychedelic agent'/exp OR 'ketamine'/exp OR 'esketamine'/exp OR 'lysergide'/exp OR 'midomafetamine'/exp OR (Hallucinogen* OR psychedelic* OR ketamine OR MDMA OR lsd OR Dipropyltryptamine):ab,kw,ti) AND ('depression'/exp OR 'adjustment disorder'/exp OR 'anxiety'/exp OR 'demoralization'/exp OR (depress* OR anxiet* OR existential* OR psychol* OR distress* OR ‘fear of death’):ab,kw,ti) AND ('hospice'/exp OR 'neoplasm'/exp OR 'terminal care'/exp OR (palliative OR terminal OR ‘life-threaten*’ OR ‘end-of-life’ OR cancer* OR dying OR ‘advanced malignan*’):ab,kw,ti) NOT ('animal'/exp NOT 'human'/exp) |
PsycInfo | (DE "Hallucinogenic Drugs" OR DE "Bufotenine" OR DE "Lysergic Acid Diethylamide" OR DE "Mescaline" OR DE "Peyote" OR DE "Phencyclidine" OR DE "Psilocybin" OR DE "Ketamine" OR DE "Lysergic Acid Diethylamide" OR DE "Methylenedioxymethamphetamine" OR TI (Hallucinogen* OR psychedelic* OR ketamine OR MDMA OR OR lsd OR Dipropyltryptamine OR “methylenedioxyamphetamine demethylase” OR "2-Oxo-PCE" OR "N-methylketamine") OR AB (Hallucinogen* OR psychedelic* OR ketamine OR MDMA OR lsd OR Dipropyltryptamine OR “methylenedioxyamphetamine demethylase” OR "2-Oxo-PCE" OR "N-methylketamine")) AND (DE "Depression (Emotion)" OR DE "Emotional States" OR DE "Sadness" OR E "Major Depression" OR DE "Anaclitic Depression" OR DE "Dysthymic Disorder" OR DE "Endogenous Depression" OR DE "Late Life Depression" OR DE "Postpartum Depression" OR DE "Reactive Depression" OR DE "Recurrent Depression" OR DE "Treatment Resistant Depression" OR DE "Adjustment Disorders" OR DE "Anxiety" OR DE "Anxiety Sensitivity" OR DE "Computer Anxiety" OR DE "Death Anxiety" OR DE "Health Anxiety" OR DE "Mathematics Anxiety" OR DE "Performance Anxiety" OR DE "Social Anxiety" OR DE "Speech Anxiety" OR DE "Test Anxiety" OR DE "Demoralization" OR DE "Psychological Needs" OR DE "Psychological Stress" OR DE "Affective Disorders" OR DE "Disruptive Mood Dysregulation Disorder" OR DE "Major Depression" OR DE "Seasonal Affective Disorder" OR DE "Anxiety Disorders" OR DE "Generalized Anxiety Disorder" OR DE "Panic Attack" OR DE "Panic Disorder" OR TI (depress* OR anxiet* OR existential* OR psychol* OR stress* OR distress* OR “fear of death”) OR AB (depress* OR anxiet* OR existential* OR psychol* OR stress* OR distress* OR “fear of death”)) AND (DE "Hospice" OR DE "Palliative Care" OR DE "Assisted Suicide" OR DE "Euthanasia" OR DE "Neoplasms" OR DE "Benign Neoplasms" OR DE "Breast Neoplasms" OR DE "Endocrine Neoplasms" OR DE "Leukemias" OR DE "Melanoma" OR DE "Metastasis" OR DE "Nervous System Neoplasms" OR DE "Terminal Cancer" OR DE "Terminally Ill Patients" OR DE "Death and Dying" OR DE "Death Anxiety" OR DE "Death Attitudes" OR TI (palliative OR terminal* OR hospice OR “life-threaten*” OR “end-of-life” OR cancer* OR dying OR tumor OR “advanced malignanc*”) OR AB (palliative OR terminal* OR hospice OR “life-threaten*” OR “end-of-life” OR cancer* OR dying OR tumor OR “advanced malignanc*”)) |
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Schimmers, N., Breeksema, J.J., Smith-Apeldoorn, S.Y. et al. Psychedelics for the treatment of depression, anxiety, and existential distress in patients with a terminal illness: a systematic review. Psychopharmacology 239, 15–33 (2022). https://doi.org/10.1007/s00213-021-06027-y
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DOI: https://doi.org/10.1007/s00213-021-06027-y