GLP-1 (glucagon-like peptide-1) is your body’s built-in “satiety switch” that tells your brain “I’m full,” slows gastric emptying, and stabilizes insulin. Big Pharma charges $1,000+/month for synthetic versions (Ozempic, Wegovy), but Mother Nature already packed GLP-1 secrets into everyday foods, herbs, and habits. Below are 15 zero-prescription ways to crank endogenous GLP-1 secretion.