GLP-1 (Glucagon-Like Peptide-1) is a key incretin hormone peptide involved in glucose regulation and appetite control. Research shows it stimulates insulin secretion in a glucose-dependent manner, suppresses glucagon, slows gastric emptying, and promotes satiety. GLP-1 and its analogs are extensively studied for managing blood sugar levels, supporting weight loss, and providing cardiovascular benefits—making it a cornerstone in metabolic health, diabetes, and obesity research.