Dr Xand van Tulleken is well known for presenting popular TV programmes with his identical twin brother Dr Chris van Tulleken. He has presented numerous shows for the BBC and Channel 4 including the BAFTA-winning Operation Ouch, Blow Your Mind, Horizon, Secret Life of Twins and Medicine Men Gone Wild. He has also contributed medical analysis on CNN, BBC1 and 2, and Al Jazeera among others. As a junior doctor he worked in the genocide in Darfur and this inspired a passion for the politics and medicine of conflict zones which lead to his academic appointment in the US. He now works between New York, Harvard and various humanitarian crises all over the world.