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Do Probiotics Help Sleep? GABA, Gut-Brain Axis, and Clinical Studies

In addition to enhancing GABA and other neurotransmitters and hormones, probiotics promote the production of short-chain fatty acids (SCFAs), which can stimulate the vagus nerve and influence neural activity in sleep-related brain regions. They also help reduce inflammation. These mechanisms are thought to contribute to improved sleep in patients who struggle with insomnia, making probiotics a safe and effective treatment consideration.