Gerard Clarke is a Professor of Neurobehavioural Science in the Department of Psychiatry and Neurobehavioural Science, and a Principal Investigator in APC Microbiome Ireland at University College Cork. 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. His approach is based on advancing frontier knowledge in microbiome research to yield potential new therapeutic targets for effective treatment of central nervous system disorders.