GLP-1 (glucagon-like peptide-1) is one of the most studied peptide hormones in modern metabolic research. Originally identified as an incretin hormone produced in the gut in response to food intake, GLP-1 has since become the basis for an entire class of synthetic receptor agonists that are now among the most researched compounds in preclinical and clinical metabolic science. Understanding how GLP-1 works at the receptor level — and how it compares to GIP and glucagon receptor signalling — is fundamental for any researcher working in metabolic biology, endocrinology, or peptide pharmacology.

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