In collaboration with the British Society of Gastroenterology (BSG) and the British Association for Parenteral and Enteral Nutrition (BAPEN), Nutrition Society Winter Conference will take place on the 2nd-4th of December 2019 at the  The Royal Society of Medicine, London. This conference will explore the relationships between diet, gut function, gut pathologies and systemic health, taking as its focus recent developments in the field and areas of continued debate.