Gerard Clarke


Gerard Clarke is Professor of Neurobehavioural Science in the Department of Psychiatry and Neurobehavioural Science, and a Principal Investigator in APC Microbiome Ireland at University College Cork. He holds a BSc (Hons) degree in Chemistry, an MSc degree in Neuropharmacology (1999 and 2001; Both from NUI, Galway) and a PhD degree (2009) in Neurogastroenterology (Department of Psychiatry, UCC). His research interests include the impact of the gut microbiome on brain and behaviour across the life span, microbial regulation  of tryptophan metabolism and translational biomarkers of stress-related neuropsychiatric disorders. With over 190 publications and a H-Index of 71, he was included in Clarivate Analytics Web of Science Group Highly Cited Researchers list in 2019, 2020 and 2021




Research Interests

Theme: Brain-Gut-Microbiota Axis

SDGs: Sustainable Development Goal 3 - Good Health and Wellbeing

Key words: Microbiota-gut-brain axis; Tryptophan; Stress; Neurogastroenterology; Depression; Anxiety; Serotonin; Kynurenine


Gerard Clarke‬ - ‪Google Scholar‬


APC Microbiome Ireland, Biosciences Building, University College Cork, Ireland,