Professor Colin O'Gara was appointed Consultant Psychiatrist and Head of Addiction Services at St. John of God Hospital in 2007. After graduating from medical school in Cork, he trained (as a Senior House Officer and Specialist Registrar) in psychiatry and specialist addiction approaches at the Maudsley Hospital, London. He was awarded Membership of the Royal College of Psychiatrists in 2003. He conducted research in many areas of addiction at the Institute of Psychiatry, London and his work features in international scientific journals, medical publications, media articles and books (see 'research' and 'publications' sections). He heads up a research group at St. John of God Hospital within the School of Medicine at UCD. Current areas of investigation are gambling service provision, gambling stigma, responsible gambling initiatives, over the counter pill addiction and optimising efficacy of both inpatient and outpatient alcohol addiction rehabilitation. He was awarded a PhD from the University of London/Kings for his work on the genetics of nicotine addiction (2010). He regularly tutors medical students and other health professionals. Within UCD, he was appointed Clinical Professor at the School of Medicine (2018) after holding previous academic appointments of Senior Clinical Lecturer and Associate Clinical Professor. He worked with the UK charity 'Action on Addiction' and regularly interacts with the public, media and expert audiences. These interactions provide an opportunity to promote holistic, non-shame based treatment for addiction and also reduce stigma associated with addiction and mental health.