Evidence map›Paper›PMID 38491857›Full record

ReviewJournal of psychopharmacology (Oxford, England)2024

Psychiatric risks for worsened mental health after psychedelic use.

Alessia Marrocu, Hannes Kettner, Brandon Weiss, Richard J Zeifman, David Erritzoe, Robin L Carhart-Harris

Abstract readReview
In one paragraph

Review in Journal of psychopharmacology (Oxford, England), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Moving beyond 5-HTPsychopharmacology · 2026
    Article
  3. Trials, trips, and tribulations: pathways for implementing psychedelic therapy in Ireland.The international journal of neuropsychopharmacology · 2026
    Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Review
  12. Exploring Psychedelics for Unmet Needs in Women's Reproductive Health.Psychedelic medicine (New Rochelle, N.Y.) · 2025
    Review
  13. Adverse Events Should Not Be Surprising in Psychedelic Research.Psychedelic medicine (New Rochelle, N.Y.) · 2025
    Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Alessia MarrocuCentre for Psychedelic Research, Division of Psychiatry, Department of Brain Sciences, Faculty of Medicine, Imperial College London, London, UK.ORCID 0000-0001-7750-4870
Hannes KettnerCentre for Psychedelic Research, Division of Psychiatry, Department of Brain Sciences, Faculty of Medicine, Imperial College London, London, UK.ORCID 0000-0001-9482-0998
Brandon WeissCentre for Psychedelic Research, Division of Psychiatry, Department of Brain Sciences, Faculty of Medicine, Imperial College London, London, UK.
Richard J ZeifmanCentre for Psychedelic Research, Division of Psychiatry, Department of Brain Sciences, Faculty of Medicine, Imperial College London, London, UK.ORCID 0000-0003-3478-4483
David ErritzoeCentre for Psychedelic Research, Division of Psychiatry, Department of Brain Sciences, Faculty of Medicine, Imperial College London, London, UK.ORCID 0000-0002-7022-6211
Robin L Carhart-HarrisCentre for Psychedelic Research, Division of Psychiatry, Department of Brain Sciences, Faculty of Medicine, Imperial College London, London, UK.ORCID 0000-0002-6062-7150

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundResurgent psychedelic research has largely supported the safety and efficacy of psychedelic therapy for the treatment of various psychiatric disorders. As psychedelic use and therapy increase in prevalence, so does the importance of understanding associated risks. Cases of prolonged negative psychological responses to psychedelic therapy seem to be rare; however, studies are limited by biases and small sample sizes. The current analytical approach was motivated by the question of whether rare but significant adverse effects have been under-sampled in psychedelic research studies.

methodsA "bottom margin analysis" approach was taken to focus on negative responders to psychedelic use in a pool of naturalistic, observational prospective studies (

resultsWe find that 16% of the cohort falls into the "negative responder" subset. Parsing the sample by self-reported history of psychiatric diagnoses, results revealed a disproportionate prevalence of negative responses among those reporting a prior personality disorder diagnosis (31%). One multivariate regression model indicated a greater than four-fold elevated risk of adverse psychological responses to psychedelics in the personality disorder subsample (

conclusionWe infer that the presence of a personality disorder may represent an elevated risk for psychedelic use and hypothesize that the importance of psychological support and good therapeutic alliance may be increased in this population.

Indexed as

HallucinogensMental DisordersHumansMental HealthProspective StudiesSelf ReportHallucinogensadverse effectsbottom margin analysispersonality disorderPsychedelicspsychiatric risk

Identifiers

PMID38491857
PMCPMC10944581

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.