Dr Giulia Trotta is a psychiatrist and researcher in the Department of Psychosis Studies at the Institute of Psychiatry, Psychology & Neuroscience at King's College London. Her work examines how childhood adversity, cannabis use and genetic risk interact to shape psychosis.

She trained in medicine and psychiatry at the University of Milano-Bicocca before joining King’s, where she completed her PhD (awarded 2026) on the biological predictors of the interplay between childhood adversity and cannabis use in psychosis risk, supervised by Professor Marta Di Forti.

Her research integrates clinical, environmental, genetic and epigenetic data from large international cohorts to understand how early-life trauma and cannabis use combine with genetic vulnerability to influence the onset and expression of psychosis. She is first author on studies published in journals including Biological Psychiatry, Psychological Medicine and Translational Psychiatry.

Alongside her research, Dr Trotta is a GMC-registered psychiatrist and Honorary Consultant in the South London and Maudsley's Cannabis Clinic, where she assesses and manages young adults with co-occurring substance use and psychotic disorders.

Research interests

• The interplay between childhood adversity, cannabis use and psychosis
• Gene-environment interplay in psychiatry: polygenic scores and gene-environment correlation
• Epigenetics and DNA methylation in psychosis risk