Semaglutide mastery course
Unit 2 of 12

GLP-1 and incretin biology

Semaglutide does not invent a new pathway; it amplifies one the body already runs. This unit walks the incretin system:…

The incretin system semaglutide borrows from

Semaglutide does not invent a new pathway; it amplifies one the body already runs. This unit walks the incretin system: how a meal triggers GLP-1 release, how the receptor coordinates insulin, glucagon, gastric emptying, and satiety, and why those effects appear together.

Understanding the natural biology is the key to reading every later claim, because the drug is simply a longer-lasting version of this signal.

Key terms

The incretin effect


Two pathways from one receptor


Where the GLP-1 receptor acts


Why hypoglycemia risk stays low


Appetite, the stomach, and the brain