In our post on GERD trigger foods, we touched on how reflux is often connected to more than diet alone. One piece of that bigger picture is the vagus nerve, the main communication line between your brain and your gut. Here's what it actually does, and where chiropractic care may, and may not, fit in. What the Vagus Nerve Does in Digestion The vagus nerve is the largest nerve of the parasympathetic nervous system, running from the brainstem down through the neck and chest into