Glucagon is a peptide hormone that plays a key role in regulating blood sugar levels in the body. It is produced by the alpha cells of the pancreas and works in opposition to insulin, another hormone involved in glucose regulation. Glucagon stimulates the release of stored glucose from the liver, increasing blood sugar levels when they are too low. Research in the area of glucagon focuses on understanding its role in metabolism, its potential therapeutic applications for diabetes, and its connection to other metabolic disorders. Additionally, researchers are studying ways to modulate glucagon signaling to develop new treatments for metabolic diseases such as diabetes.