GLP-1 (Glucagon-Like Peptide-1) is a hormone produced in the intestines in response to food intake. It plays a crucial role in regulating blood sugar levels by stimulating insulin secretion in a glucose-dependent manner (meaning it only increases insulin release when blood sugar levels are elevated). GLP-1 also suppresses glucagon secretion (a hormone that increases blood sugar levels) and slows down gastric emptying, which helps to control postprandial (after-meal) glucose levels.Mechanism of Action
GLP-1 receptor agonists bind to and activate GLP-1 receptors on pancreatic beta cells (which produce insulin) and other tissues involved in glucose metabolism. This activation leads to increased insulin secretion in response to meals, reduced glucagon secretion (which decreases glucose production by the liver), and slowed gastric emptying (which helps to prevent rapid rises in blood sugar after eating).
Clinical Use of GLP-1 Agonists
Clinical Use: GLP-1 receptor agonists are typically prescribed along with a reduced-calorie diet and increased physical activity to individuals with type 2 diabetes who have not achieved adequate blood sugar control with other oral medications. GLP-1 agonists, originally developed for the management of type 2 diabetes, have also been approved for weight management due to their beneficial effects on appetite control and metabolism.
Benefits of GLP-1 Agonists
- Effective in promoting weight loss by reducing appetite and increasing feelings of fullness.
- Helps improve blood sugar control by enhancing insulin secretion in response to meals.
- Lowers the risk of cardiovascular events, such as heart attack or stroke, in people with type 2 diabetes.
- May improve metabolic health by reducing inflammation and oxidative stress.
- Typically associated with a lower risk of hypoglycemia compared to other diabetes medications.