Vagal Nerve Stimulation: What is it and Who is it Helpful For?

Vagal nerve stimulation (VNS), particularly in non-invasive forms like ear clips or skin stimulators, can support the Autonomic Nervous System (ANS)—especially when combined with other therapies. In my clinical practice, we use a range of VNS techniques to stimulate the vagus nerve, which plays a central role in regulating the body’s stress and relaxation responses.

How vagal nerve stimulation works

Non-invasive vagal nerve stimulation targets areas of the body where the vagus nerve has superficial branches, such as near the ear or neck. Devices deliver gentle impulses—via vibration or electrical stimulation—that activate sensory nerve fibres without causing pain. These signals travel along the vagus nerve, providing therapeutic input to help balance the ANS, calming the ‘fight or flight’ response and supporting ‘rest and digest’ functions.

Who Can Benefit?

Stroke: Stroke-related damage can affect vagus nerve regulation of the heart, lungs, and gut. Integrating VNS into a functional rehabilitation program may help address ANS-related stress and fatigue. When used alongside active movement or sensory therapy, VNS offers a comprehensive approach to nervous system recovery.

POTS: VNS can help manage Postural Orthostatic Tachycardia Syndrome (POTS) by restoring balance between the body’s stress and relaxation systems. It has been shown to reduce rapid heart rate and improve symptoms like dizziness and fatigue, thanks to its direct influence on autonomic function.

Multiple Sclerosis (MS): ANS dysfunction is common in MS due to progressive neuronal damage. As the disease advances, issues with parasympathetic and sympathetic regulation can worsen. Emerging evidence suggests that VNS, when paired with functional therapy, may offer support for those managing MS-related vagal nerve dysfunction.

Concussion: Persistent concussion symptoms—like headaches, dizziness, and mood disturbances—are often tied to ANS disruption. VNS provides a drug-free way to positively stimulate the vagus nerve and may offer symptom relief for those with lingering effects of head injury.