GLP-1
Incretin hormone that regulates blood sugar, appetite, and metabolic health
Clinical Research Score: 5/5 — The GLP-1 receptor-agonist class is FDA-approved and supported by extensive large-scale clinical trials for diabetes and weight loss.
Categories: Weight Loss / Metabolic
What is GLP-1?
GLP-1 is the natural hormone that inspired the entire class of weight loss medications — semaglutide, tirzepatide, and others are all designed to mimic what GLP-1 does naturally in your body. Understanding GLP-1 itself helps you understand why these medications work so well.
Your gut naturally produces GLP-1 after eating, and it does several things simultaneously: it tells your brain you're full, it helps your pancreas manage blood sugar effectively, and it slows digestion so you feel satisfied longer. The problem is that natural GLP-1 breaks down in just minutes.
People using GLP-1 peptide formulations report improved appetite control, more stable blood sugar throughout the day, fewer cravings, and a general feeling of metabolic balance. It's the foundational peptide in the weight management space — the building block that made all the breakthrough medications possible.
How GLP-1 works
GLP-1 activates its receptors throughout the body to coordinate your metabolic response to food. In the pancreas, it enhances insulin secretion (but only when blood sugar is elevated — a crucial safety feature). In the brain, it activates satiety centers that tell you you've eaten enough. In the stomach, it slows gastric emptying so food moves through more gradually, extending feelings of fullness. Natural GLP-1 lasts only about 2 minutes before being broken down by the DPP-4 enzyme.
Scientific overview
GLP-1 (Glucagon-Like Peptide-1) is an incretin hormone produced by L-cells in the gut. It enhances insulin secretion in a glucose-dependent manner, suppresses glucagon release, slows gastric emptying, and promotes satiety through central nervous system pathways. Native GLP-1 has a very short half-life due to rapid degradation by DPP-4.
Dosing
- Starting dose: Low dose per formulation guidelines
- Common dosage range: Varies by formulation
- Administration: Subcutaneous
- Half-life: ~2 minutes (native)
- Frequency: Varies by formulation