Transcutaneous Auricular Vagus Nerve Stimulation for Functional Dyspepsia

Functional dyspepsia (FD) is a challenging disorder characterized by persistent upper-gastrointestinal discomfort that significantly diminishes quality of life. This research summary highlights a promising non-invasive therapy: transcutaneous auricular vagus nerve stimulation (taVNS). The study investigated whether stimulating specific points in the ear's conchal region could alleviate FD symptoms by modulating brain networks tied to autonomic function and internal body awareness. In this small pilot study, 21 adults with FD self-administered taVNS for thirty minutes twice daily over eight weeks. The results were compelling. At the end of the treatment period, participants reported a significant improvement in their dyspepsia symptoms, a higher quality of life, and reduced scores for both anxiety and depression. These clinical gains were mirrored by changes in the brain. Functional MRI scans revealed decreased connectivity in insula-centered networks, which are crucial for symptom perception and emotional regulation. For acupuncture practitioners, this study provides valuable mechanistic support for using auricular stimulation, especially in patients whose digestive complaints are intertwined with stress or emotional factors. It also offers a practical, evidence-supported protocol—bilateral stimulation for 30 minutes, twice a day—and reinforces the rationale for combining digestive and autonomic-regulating points for a holistic effect.

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Episoder(185)

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