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Brain Fog and the Vagus Nerve: A Clinical Map of the Cognitive Haze

Brain fog is not a vague complaint. It is a downstream signal of neuroinflammation, autonomic dysregulation, and impaired vagal control of cerebral perfusion — and the vagus nerve sits at the center of every loop that produces it.

By VagusSkool Team May 11, 2026

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Brain Fog and the Vagus Nerve: The Autonomic Cause of Cognitive Cloudiness

Brain fog isn’t a thinking problem — it’s a body problem with cognitive symptoms. The fix usually isn’t a smart drug. It’s a nerve.

By VagusSkool May 7, 2026