"While probiotics consist of strains of good bacteria, prebiotics are carbohydrates that act as nourishment for those bacteria. With more evidence that gut bacteria may exert some influence on brain function and mental health, probiotics and prebiotics are being studied for the potential alleviation of anxiety and depression symptoms."
"The researchers also found that the subjects who took the prebiotics had lower levels of cortisol — a stress hormone which has been linked with anxiety and depression — in their saliva when they woke up in the morning."
"While previous research has documented that altering gut bacteria has a similarly anxiety-reducing effect in mice, the new study is one of the first to examine this phenomenon in humans. As of now, research on humans is in its early stages. A study conducted last year at UCLA found that women who consumed probiotics through regularly eating yogurt exhibited altered brain function in both a resting state and when performing an emotion-recognition task."
From the Huffington Post: http://ow.ly/GY1RC
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