From Gila Monster to GLP-1 Revolution
From Fork U with Dr. Terry Simpson by Terry Simpson
February 26, 2026 · 13 min · Episode 117
About this episode
This episode discusses the evolution of GLP-1 drugs and their impact on obesity medicine and diabetes treatment.
Meanwhile, in a Laboratory In 1990, researchers isolated a peptide from Gila monster venom. Two years later, work from the Bronx VA Medical Center described exendin-4, a molecule that resembled human GLP-1 but lasted far longer in circulation. Human GLP-1 survives only minutes before the body breaks it down. Exendin-4 resisted that breakdown. That difference changed everything. Soon afterward, the first GLP-1 receptor agonist reached patients under the brand name Byetta . At the time, physicians used it to treat diabetes. No one called it a weight-loss drug. No one predicted it would reshape obesity medicine. And yet, the foundation was already in place. While I Was Operating At the Phoenix Indian Medical Center, I performed weight loss surgery in a population with some of the highest rates of type 2 diabetes in the world. Researchers there studied metabolism intensely. The “thrifty gene” hypothesis gained traction in that environment. Scientists asked whether efficient energy storage, once protective in scarcity, became harmful in abundance. At the same time, I watched something remarkable in the operating room. After gastric bypass, patients’ blood sugars often improved within…
People in this episode
Host: Terry Simpson
Topics covered
- GLP-1
- obesity medicine
- diabetes treatment
- metabolism
- gastric bypass
- hormonal changes
Keywords
- GLP-1
- exendin-4
- Byetta
- gastric bypass
- type 2 diabetes
- metabolism
- hormones
Mentioned in this episode
Organizations: Bronx VA Medical Center
Products: Byetta
Books & works: thrifty gene hypothesis
Places: Phoenix Indian Medical Center
More episodes of Fork U with Dr. Terry Simpson
- The Scientists Who Built the Modern Snack · June 11, 2026 · 14 min
- Taste Buds Everywhere: Your Body's Hidden Food Sensors · June 4, 2026 · 12 min
- Diabetes, Weight Loss, Remission or Cure · May 28, 2026 · 18 min
- The Science of Hangovers: Why Most “Cures” Fail · May 21, 2026 · 15 min
- Why Food Became Engineered to Defeat You · May 14, 2026 · 13 min
- What I Eat on a GLP-1 And Why It Changes · May 7, 2026 · 11 min
Explore listener stats, chart rankings, contacts and more on the Fork U with Dr. Terry Simpson podcast page.