Vagus nerve stimulation — the surprise winner
- Now FDA-approved
The most 'out-there' idea turned out to be the most real: stimulating the vagus nerve (which naturally dampens inflammation) with a small implant. In a proper sham-controlled trial it beat placebo, and in 2025 the FDA approved it as an add-on for refractory RA — the first neuro-immune therapy for the disease. The effect is modest and it's reserved for hard-to-treat cases, but it's genuine, not fringe. Evidence ●●●●○