“Do no harm” is a mantra that is drummed into medical students from day 1 of medical school. Most of us have gone into medicine as we believe medicine to be a force of good. However, too much medicine is capable of causing harm to patients and generating unnecessary waste. In this episode, we spoke about overdiagnosis, communicating risks and benefits with patients, and why you shouldn't take that free lunch sponsored by drug companies. Recommended reading: •Preventing overdiagnosis: how to stop harming the healthy. Link: https://www.bmj.com/content/344/bmj.e3502 •Who pays for the pizza? Redefining the relationships between doctors and drug companies. 1: Entanglement. Link: https://www.bmj.com/content/326/7400/1189 Expert guest: Dr Martin Brunet (@docmartin68 on Twitter) is a GP and a GP trainer at Guildford. He is also the author of The GP Consultation Reimagined: A Tale of Two Houses. Check us out on social media: Twitter: https://twitter.com/BMJStudent Instagram: https://www.instagram.com/bmj_student/ Facebook: https://www.facebook.com/BMJStudent/ This podcast is produced and edited by Dom Byrne and Duncan Jarvies.