MCAS
mast cell
histamine
MCAS, the Vagus Nerve, and the Cholinergic Anti-Inflammatory Reflex
Mast cell activation is not just an allergy problem. It is a failure of the vagal brake on innate immunity — and the cholinergic anti-inflammatory pathway is one of the most promising therapeutic levers.
By UltraSkool Research Team
May 10, 2026