What Is Leptin? Leptin is a hormone produced by fat cells that communicates with the brain, particularly the hypothalamus, to signal that the body has sufficient energy stores. When this signaling works properly, appetite decreases and feelings of fullness increase. Because of this important role, leptin is often called the "satiety hormone." Why Are People with Obesity Still Hungry? People with obesity usually have higher leptin levels because they have more body fat. Howev

What is GLP-1? GLP-1 (Glucagon-Like Peptide-1) is a naturally occurring hormone released after meals. It helps regulate blood sugar levels, slows stomach emptying, and signals the brain that you are full. Modern GLP-1 medications mimic these natural effects, making them valuable tools for weight management and metabolic health. Newer medications such as Tirzepatide also activate GIP receptors, offering enhanced weight-loss and glucose-control benefits in many clinical studies