GLP-1 as Governance Architecture: The Three-Node Relay, Permeability Reinforcement, and Cancer Incidence (HLRP Paper #130)

This paper proposes that GLP-1 operates as the signaling thread of a membrane governance architecture — a three-node relay in which the gut produces the signal, the vagus nerve transmits it, and the brain's nucleus tractus solitarius (NTS) clones the molecule locally for distribution. GLP-1 receptor agonists amplify an existing relay by providing a DPP-4-resistant version of the governance signal. The molecule's direct activation of p53 tumor suppression pathways reframes GLP-1 as endogenous governance reinforcement — biological kevlar for the cellular checkpoint system. Drawing on a nationwide analysis of 1.1 million patients showing semaglutide associated with 45–67% reductions in gastrointestinal cancer risk, this paper maps these findings through the Geometric Coupling Theory permeability framework, identifies critical data gaps (dosage trajectories, compounded vs brand outcomes, post-discontinuation cancer incidence), and proposes ten testable predictions using existing datasets requiring no new patient enrollment. Part of the GCT/HLRP corpus.