The intestinal lining of a mouse, with several bacteria (green) and a red blood cell (red)
IKELOS GMBH/DR. Christopher B. Jackson/Science photo library
The brain seems to directly influence the intestinal microbiome, since brain signals altered the composition of intestinal microbes in mice in just 2 hours. The finding strengthens the notion that communication along the axis of the intestinal brain goes in both directions.
It is clear from previous studies that intestinal microbes can influence the function of brain and mood, but if the opposite was true, that …
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