Glucagon is a hormone produced by the pancreas that plays a crucial role in regulating blood sugar levels. When your body needs more energy, such as between meals or during exercise, glucagon signals the liver to release stored glucose into the bloodstream. This helps to raise blood sugar levels and provides energy to your cells. In contrast to insulin, which lowers blood sugar, glucagon works to increase it. This balance between glucagon and insulin is essential for maintaining stable energy levels and overall health. Understanding how glucagon functions can help people manage conditions like diabetes more effectively.