GLP-1 & Incretin Science Archives - Metabolism Explained

What Is Glucagon-like Peptide-1?

October 15, 2026 by Jennifer Smith

Glowing illustration of a human torso with the stomach and intestines highlighted, turquoise particle trails and arrows, a bright yellow pancreas, and blurred laboratory glassware and a microscope in the background.

GLP-1 is a short-lived peptide hormone released after eating. It helps coordinate insulin, glucagon and the movement of nutrients from the stomach into the intestine.

Is Semaglutide a Peptide?

September 27, 2026 by Jennifer Smith

Science illustration of a chain of glowing bead-like molecules binding to a purple receptor on a blue cell membrane, with symbolic pancreas, stomach, and brain icons connected by dotted pathways in the background.

Semaglutide is a modified peptide medicine modeled on the GLP-1 hormone. Its engineered structure helps it last longer than native GLP-1, but peptide classification alone does not explain its clinical effects or safety.