GIP, or Gastric Inhibitory Polypeptide, is a hormone produced in the small intestine. It plays a crucial role in regulating insulin secretion and glucose metabolism. When food enters the digestive system, GIP is released, signaling the pancreas to release insulin, which helps lower blood sugar levels. In addition to its role in insulin regulation, GIP also influences fat metabolism and appetite control. It is part of the body's response to food intake, helping to manage energy balance. Understanding GIP is important for research into conditions like diabetes and obesity, where insulin and glucose regulation are critical.