GLP-1 (Glucagon-Like Peptide-1) is a hormone your gut releases after eating that signals fullness, slows gastric emptying, and stabilizes blood sugar. Drugs like Ozempic, Wegovy, Mounjaro, and Zepbound mimic GLP-1. You can also support natural GLP-1 production through high-protein, high-fermentable-fiber foods that feed gut bacteria producing SCFAs.