24/08/2026
The vagus nerve originates in the brainstem and travels down through the neck into the chest and abdomen. It connects the brain to many major organs, including the heart, lungs, digestive tract, liver and pancreas. 🧠
Its primary role is to regulate the parasympathetic nervous system, often called the “rest and digest” system. This system helps: Slow the heart rate, Lower blood pressure, reduce inflammation, Promote relaxation and recovery.
When the vagus nerve is functioning well, the body is adaptable and balanced. When it is impaired, the body can become stuck in “fight or flight.”
The upper cervical spine-specifically the atlas (C1) and axis (C2),is uniquely positioned at the base of the skull, directly beneath the brainstem.
This region is the most neurologically dense area of the spine and is responsible for supporting the head and allowing movement. It is also closely associated with the brainstem, where the vagus nerve originates.
A healthy neck has a natural lordotic curve. This curve helps distribute mechanical stress and protects the spinal cord and brainstem. When this curve is lost (often due to poor posture or injury) it can Increase tension on the spinal cord and brainstem, Reduce shock absorption or even alter biomechanics of the upper cervical joints
This added stress can interfere with the normal function of the vagus nerve and other autonomic pathways.
When the vagus nerve is not functioning properly, a wide range of symptoms can develop. These often overlap with conditions like POTS and dysautonomia.
The more you know! 👩🏫
