Vital Vagus: What is the vagus nerve and what does it do?
Some of the functions of the vagus nerve have been long established, while others were discovered only recently. No doubt, within the next few decades we will continue to learn more and more about it, since electrical stimulation of the vagus nerve for conditions including epilepsy, rheumatoid arthritis and depression is becoming an alternative to drugs. Here are some fascinating things that the vagus nerve does (that we know so far).
7 Things you had no idea gut bacteria could do -- Sott.net
If you're a regular Mark's Daily Apple reader, you probably have at least a generally accurate if somewhat vague notion of the important functions performed by our gut bacteria. They're a "big part" of our immune systems. They "improve digestion"...