Professor Andrew S Day is a Paediatric Gastroenterologist based in Christchurch, New Zealand. He has an academic appointment at the University of Otago Christchurch along with an appointment in the Paediatrics Department at Christchurch Hospital. After medical and paediatric training in Dunedin and Christchurch, he undertook further specialty training at the world-renowned Hospital for Sick Kids in Toronto, Canada. He then worked for almost a decade in Sydney, Australia, before returning to NZ in 2009. He has clinical and research interests in inflammatory bowel diseases and Coeliac disease, with productive research activities in these areas. He has published more than 300 papers in various journals.