Dr Philip Smith, Digital and Education Editor of Gut and Consultant Gastroenterologist at the Royal Liverpool Hospital, interviews Professor Andrew Chan, Harvard Medical School, Boston, USA. This podcast is focused on the paper "Diet quality and risk and severity of COVID-19: a prospective cohort study", published in paper copy in Gut in November 2021. Link to the paper: https://gut.bmj.com/content/70/11/2096