Dr Philip Smith, Digital and Education Editor of Gut and Consultant Gastroenterologist at the Royal Liverpool Hospital interviews Professor Gunnar C. Hansson from the Mucin Biology Groups, Department of Medical Biochemistry and Cell Biology, University of Gothenburg, Sweden. The Gut podcast is focussed on the paper "Association between Brachyspira and irritable bowel syndrome with diarrhoea" which is published in paper copy in Gut in June 2021. Related or relevant article: https://gut.bmj.com/content/70/6/1117