With its 100 million neurons, the gut has earned a reputation as the body’s “second brain”—corresponding with the real brain to manage things like intestinal muscle activity and enzyme secretions. A growing community of scientists are now seeking to understand how gut neurons interact with their brain counterparts, and how failures in this process may lead to disease.
Now, new research shows that gut bacteria play a direct role in these neuronal communications, determining the pace of intestinal motility. The research, conducted in mice and published in Nature, suggests a remarkable degree of communication between our nervous system and the microbiota. It may also have implications for treating gastrointestinal conditions.
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