Probiotics and sleep: 6 studies on whether gut bacteria improve sleep.
Probiotics for sleep isn't just a marketing label from a yoghurt pot. It's a field where enough randomised studies have amassed in recent years to ask a genuine question. Can gut bacteria really improve sleep? A fresh systematic review in the Journal of the International Society of Sports Nutrition (May 2026) compiled 6 RCTs. The authors looked at what happens to...
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