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Personal profile

Research interests

My main research interest is studying the epidemiology of psychiatric disorders, and especially the overlap between psychotic disorders and complex-PTSD. I am particularly interested in studying:

  • Risk factors influencing the development of psychotic experiences during adolescence and their transition to clinical disorder over time

  • The relationship between cannabis use and risk of developing mental health disorders

  • The role of traumatic events on the aetiology of psychosis

  • The genetic epidemiology of psychosis, including the study of how co-exposure to genetic and environmental risk factors impact upon psychosis risk

Most of my work has been based upon data from ALSPAC, a birth cohort study based here in Bristol, and on record-linkage data from Sweden.

External positions

Professor of Psychiatric Epidemiology, MRC Centre for Neuropsychiatric Genetics and Genomics, Division of Psychological Medicine and Clinical Neurosciences, Cardiff University, Cardiff, Wales, United Kingdom.

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Research Output

A Mendelian randomization study of the causal association between anxiety phenotypes and schizophrenia

Jones, H. J., Martin, D., Lewis, S. J., Davey Smith, G., O'Donovan, M. C., Owen, M. J., Walters, J. T. R. & Zammit, S., 24 Jun 2020, In : American Journal of Medical Genetics, Part B: Neuropsychiatric Genetics. 10 p.

Research output: Contribution to journalArticle (Academic Journal)

Open Access
  • 12 Downloads (Pure)

    A population-based cohort study examining the incidence and impact of psychotic experiences from childhood to adulthood, and prediction of psychotic disorder.

    Sullivan, S. A., Kounali, D-Z., Cannon, M., David, A. S., Fletcher, P., Holmans, P. A., Jones, H., Jones, P. B., Linden, D. E. J., Lewis, G. H., Owen, M. J., O'Donovan, M. C., Rammos, A., Thompson, A., Wolke, D. & Zammit, S., 7 Jan 2020, In : American Journal of Psychiatry. 10 p.

    Research output: Contribution to journalArticle (Academic Journal)

  • Change in the relationship between drinking alcohol and risk of violence among adolescents and young adults: A nationally representative longitudinal study

    Zammit, S., 11 Mar 2020, (Accepted/In press) Oxford University Press Blog.

    Research output: Contribution to specialist publicationArticle (Specialist Publication)

    Open Access
  • 4 Downloads (Pure)


    Genome-wide association study of lifetime smoking index in a sample of 462,690 individuals from the UK Biobank

    Munafo, M. R. (Creator), Wootton, R. E. (Creator), Richmond, R. (Contributor), Stujifzand, B. (Contributor), Lawn, R. (Contributor), Sallis, H. M. (Contributor), Taylor, G. M. J. (Contributor), Hemani, G. (Contributor), Jones, H. J. (Contributor), Zammit, S. (Contributor) & Davey Smith, G. (Contributor), University of Bristol, 3 Oct 2019


    Supervised Work

    Pathways to Psychosis: Examining the Effect of Childhood Trauma and Abnormal Belief-Updating Processes on Psychosis

    Author: Croft, J., 23 Jun 2020

    Supervisor: Zammit, S. (Supervisor), Heron, J. (Supervisor) & Teufel , C. (External person) (Supervisor)

    Student thesis: Doctoral ThesisDoctor of Philosophy (PhD)