therapy
Vagus Nerve Stimulation
Electrically stimulating the vagus nerve through the skin to influence stress, anxiety, and sleep — emerging clinical category.
The vagus nerve is the main conduit of the parasympathetic ("rest and digest") nervous system. Transcutaneous vagus nerve stimulation (tVNS) uses skin-contact electrodes on the neck or ear to stimulate the nerve from outside the body.
Clinical (implanted) vagus nerve stimulation is FDA-cleared for treatment-resistant depression, epilepsy, and migraine. Consumer tVNS devices are not approved for any specific condition — they're sold as wellness devices targeting stress, anxiety, and sleep.
The clinical literature for tVNS is real but early. Dozens of small RCTs across anxiety and stress endpoints, with positive but inconsistent results. We rate the consumer category at 3 on the Woo-Woo Meter — see our deep dive.
Sources
- [1]Critical Review of Transcutaneous Vagus Nerve Stimulation: Challenges for Translation to Clinical Practice · Frontiers in Neuroscience · 2020-04-28
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