Can foods be as potent as medicines? It's claimed garlic, beetroot and watermelon can all reduce our blood pressure - but what's the truth? Dr Chris van Tulleken investigates.

Medical journalist Michael Mosley quizzes leading experts to discover if sugar really is a toxin. Dr Saleyha Ahsan dispels some popular myths about treating burns and surgeon Gabriel Weston travels to Russia to witness a controversial operation where stems cells are being used to rebuild organs. Show less