Doubt cast on role of probiotics

Contrary to popular belief, commonly used probiotics do not prevent antibiotic-associated diarrhoea in older adults, a large clinical trial has shown.

The UK study found no difference in rates of antibiotic-associated diarrhoea, including that caused by Clostridium difficile, between hospital inpatients given probiotics and those given placebo.

The results are at odds with recent meta-analyses, including a 2012 study that concluded taking

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