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Probiotics, not so friendly after all?

New research indicates that many probiotics are ineffective and some may even cause harm. Now scientists say we should switch to prebiotics

Over the past two decades, it seemed that our guts had never had it so good. Probiotic products claiming to rid the body of the bad bacteria that causes illness burst on to the market and two million of us now swallow their promise of improved digestive health, provided by so-called “friendly bacteria”. We spend almost £350 million a year on drinks, yoghurts, powders and capsules, in the hope of improving our gut health. But is it money well spent? A growing number of experts think not. While they do not dispute that a balance of gut flora is beneficial,

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