How does the commensal bacteria affect us brain ?
There are many different mechanism. One way is by activating the vagus nerve. The vagus nerve contact the gut lining and extents all the way up to the brain stem itself
The bacterium called Lactobacillus Rahnosus effect depressive-like behavior in mice
Another way by which microbes can affect the brain is by activation of the immune system. It’s about 80% of the body’s immune cells reside in the gut and immune abnormalities contribute to several neurological disorders.
我的心得 :
And here is my opinion , probiotic treatment for infants or kids which get eatsick have been used for almost a decade. But , it's nearly impossible to image that some of probiotics even can affect our neurological system throught the Gut-Microbiota-brain. Nowaday, the progression of human health sciences keep going on. More and more massive discoveries still are not found , not only in human body science area , the others like TCM (traditional chinese medicines) or Ayurveda.