Science Friday Science Friday

Is there science behind the ‘nervous system reset’?

Sep 7, 2026 · 18m

Summary

Neurosurgeon Dr. Kevin Tracy explains the vagus nerve’s role in regulating inflammation and immune response, detailing his discovery of the "inflammatory reflex." He discusses the FDA-approved SetPoint Medical device, which uses electrical stimulation to treat rheumatoid arthritis by acting as a brake on excessive inflammation. The episode also fact-checks popular social media wellness trends, distinguishing between scientifically validated bioelectronic medicine and unproven lifestyle hacks like gargling or humming.

Topics discussed

Promo: A Ghost in Your Ear Promo: Progressive Insurance Promo: Odu Business Software Intro: The Vagus Nerve and Wellness Trends Guest Intro: Dr. Kevin Tracy Anatomy: What is the Vagus Nerve? Discovery: Linking Vagus Nerve to Inflammation Application: Vagus Nerve Stimulation for Arthritis Device: FDA Approval of Set Point Medical Mechanism: How Electrical Signals Stop Inflammation Transition: Fact-Checking Social Media Claims Sponsor Breaks Myths vs Science: Gargling, Humming, and Devices Neuroplasticity and Epilepsy Side Effects Breathing and Vagus Nerve Stimulation Vagus Nerve Damage in Long COVID Semantic Issues: 'Nervous System Resets' Patient Outcomes: From Lab to Clinic Future Applications: Other Diseases Barriers to Adoption and Patient Demand Outro and Credits
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