Evidence map›Paper›PMID 26781550›Full record

ReviewCurrent psychiatry reports2016

Cannabis and Psychosis: a Critical Overview of the Relationship.

Charles Ksir, Carl L Hart

Abstract readReview
PubMed Publisher
In one paragraph

Review in Current psychiatry reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 4 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

42 citing papers in PubMed, 4 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Cannabis use and psychosis: a review of reviews.European archives of psychiatry and clinical neuroscience · 2020
    Pooled it
  4. Pooled it
  5. Article
  6. Review
  7. Article
  8. Review
  9. The Role of Cannabis in the Development of Psychosis.Turk psikiyatri dergisi = Turkish journal of psychiatry · 2024
    Review
  10. Article
  11. Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Cannabis use and cannabis use disorder.Nature reviews. Disease primers · 2021
    Review
  20. 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

2 authors.

Charles KsirDepartment of Psychology and Neuroscience Program, University of Wyoming, Laramie, WY, USA.
Carl L HartDivision on Substance Abuse, New York State Psychiatric Institute, Columbia University, 1051 Riverside Dr., Unit 120, New York, NY, 10032, USA. clh42@columbia.edu.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Interest in the relationship between cannabis use and psychosis has increased dramatically in recent years, in part because of concerns related to the growing availability of cannabis and potential risks to health and human functioning. There now exists a plethora of scientific articles addressing this issue, but few provide a clear verdict about the causal nature of the cannabis-psychosis association. Here, we review recent research reports on cannabis and psychosis, giving particular attention to how each report provides evidence relating to two hypotheses: (1) cannabis as a contributing cause and (2) shared vulnerability. Two primary kinds of data are brought to bear on this issue: studies done with schizophrenic patients and studies of first-episode psychosis. Evidence reviewed here suggests that cannabis does not in itself cause a psychosis disorder. Rather, the evidence leads us to conclude that both early use and heavy use of cannabis are more likely in individuals with a vulnerability to psychosis. The role of early and heavy cannabis use as a prodromal sign merits further examination, along with a variety of other problem behaviors (e.g., early or heavy use of cigarettes or alcohol and poor school performance). Future research studies that focus exclusively on the cannabis-psychosis association will therefore be of little value in our quest to better understand psychosis and how and why it occurs.

Indexed as

CannabisDisease SusceptibilityHumansMarijuana SmokingPsychotic DisordersRisk FactorsCognitionMarijuanaMental illnessPsychotic disorderSchizophreniaTHC

Identifiers

PMID26781550

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.