A new study shows for the first time that probiotics in the diet can affect brain activity in humans.
Using functional MRI (fMRI), researchers discovered that women who regularly consumed foods with probiotics had altered activity in areas of the brain that process sensation and emotion.
It's still unclear whether these changes are beneficial, since evaluating the effects will require additional research. However researchers hope to pursue studying how probiotics affect people with irritable bowel syndrome and anxiety.
Earlier research has demonstrated that gut microbiota can affect brain activity and behavior in mice, but this is the first study to show that probiotics can affect resting brain activity in humans.
"This gives credence to the idea that we may eventually modulate brain function in disease states using probiotics," explained John Cryan, PhD, who led the earlier research on mice and probiotics, and commented on the new study for Medscape Medical News.
Dr.Cryan pointed out that they still have to investigate the mechanisms as to how the bacteria are affecting the brain.
The study, published in the journal Gastroenterology, included 36 healthy women with no psychiatric or gastrointestinal conditions.
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