The Tiny Implant Replacing Life-Changing Drugs | Biohacking Tools
Dave Asprey
Nov 18, 2025
Mindsip insights from this episode:
Utilize electricity to reduce reliance on drugs for rheumatoid arthritis
An FDA-approved implant treats rheumatoid arthritis by stimulating the vagus nerve for one minute a day, allowing 75% of trial patients to stop taking powerful biologic drugs.
Utilize TENS unit to lower inflammatory markers
Despite his skepticism, the researcher uses a simple TENS unit on his ear because his own small studies show it can lower inflammatory markers in healthy people.
Understand vagus nerve complexity beyond simple stimulation
The vagus nerve is not a single wire but a bundle of 200,000 individual fibers, each with a specific job, so saying you're "stimulating the vagus nerve" is an oversimplification.
Understand ear's fish gill origin for sensory insights
The cartilage of your external ear is embryologically derived from ancient fish gills, which is why a sensory branch of the vagus nerve is uniquely accessible there.
Stimulate vagus nerve with surgical implant or focused ultrasound
According to the expert, the only two scientifically proven ways to specifically stimulate the vagus nerve are with a surgical implant or with focused ultrasound.
Utilize cold plunges to trigger anti-inflammatory response and stimulate vagus nerve
Cold immersion first triggers an anti-inflammatory fight-or-flight response, and only after a few minutes does it stimulate the vagus nerve fibers that slow the heart rate.
Avoid external stimulators for reliable vagus nerve activation
Consumer devices stimulating the ear are not specific to the vagus nerve and may also stimulate other nerves, leading to unpredictable and person-dependent results.
Utilize nicotine to reduce inflammation through alpha-7 receptor activation
Nicotine can reduce inflammation by activating the same alpha-7 receptor on white blood cells that the vagus nerve uses to stop cytokine production.
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