Madeleine Finlay hears from science correspondent Linda Geddes about her experience becoming a faecal transplant donor, how getting a dose of someone else’s gut bacteria could treat illnesses like arthritis, diabetes and cancer, and asks whether a pill made from poo is an idea we are ready to swallow. Help support our independent journalism at <a href="https://www.theguardian.com/sciencepod">theguardian.com/sciencepod</a>
