About Dr Chris and Dr Zand van Tulleken
Dr Chris and Dr Xand van Tulleken live in London with their families. They are qualified doctors, trained at Oxford University. Dr Chris is a practising infectious disease doctor, based at University College London Hospital and Dr Xand is an Associate Professor at University College London's Health of the Public.
As well as Operation Ouch!, Xand is one of the regular doctors on BBC's Morning Live and they have both presented many other documentaries on health and medicine including What Are We Feeding Our Kids?, The Secrets of Human Body, Frontline Doctors: Winter Migrant Crisis, Horizon, Is Binge Drinking Really That Bad?, Blow Your Mind, Horizon, Sugar V Fat, The Secret Life Of Twins, and Medicine Men Go Wild. in 2021 they released a podcast called A Thorough Examination; Addicted to Food which is now on BBC Radio. Dr Chris has an upcoming book about the food industry and the global obesity crisis.
According to Xand, he is seven minutes older, half an inch shorter and five kilos heavier than his brother. Chris is seven minutes younger, half an inch taller and five kilos lighter - and for this, he believes he is twice the man Xand is!
Dr Ronx is an emergency medicine doctor by profession. They graduated from King’s College Medical School in 2011. Operation Ouch! on CBBC was their first TV presenting job. They recently presented The Truth Behind Boosting Your Immune System on BBC One and Are Women The Fitter Sex? on Channel 4. Their other TV appearances include The Unshockable Dr Ronx and Is Covid Racist?.