Doctors' Notes: Caffeine

Chris and Xand take an extra caffeine shot as they continue their conversation with Professor Andy Smith, an Occupational and Health Psychologist at Cardiff University. Can caffeine really boost sports performance and if so, by how much? Why is caffeine so dangerous when mixed with alcohol? And what were the 'caffeine wars'?

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Presenters: Drs Chris and Xand van Tulleken Guest: Professor Andy Smith Producer: Jo Rowntree Executive Producer: Rami Tzabar Editor: Kirsten Lass Assistant Producer: Maia Miller-Lewis Assistant Producer and Researcher: William Hornbrook Tech Lead: Reuben Huxtable Social Media: Leon Gower Digital Lead: Richard Berry Composer: Phoebe McFarlane Sound Design: Melvin Rickarby At the BBC: Assistant Commissioner: Greg Smith Commissioning Editor: Rhian Roberts A Loftus Media production for BBC Radio 4.