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Does controlled fasting give your gut microbes a boost?
Fasting is embraced by people around the world, whether it's for religious reasons or a route to weight loss. But could there be some hidden benefits to controlled fasting?
CrowdScience presenter Marnie Chesterton has been fasting under medical supervision for two days a week over the past month. Professor Tim Spector from King's College London takes a look at which microbes have thrived while she has gone hungry.
(Image: No food warning signs. Credit: Getty Images)
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