What’s Does the Vagus Nerve Do? The word “vagus” means wanderer, as this nerve wanders throughout the body to many important organs and imparts signals from the brain regarding their level of function. Our vagus nerve goes from our brain stem all the way down to our colon. It is the longest of our cranial nerves, and it controls our parasympathetic nervous system. This system can get so stressed out these days due to poor diet, too much stress, infections, and so much more. The vagus nerve also plays a role in inflammation prevention, breathing support, heart health (it controls the heart rate), helps us to relax and switch off…