Insulin is a hormone produced by the pancreas, specifically by the beta cells within the islets of Langerhans. It plays an essential role in regulating blood sugar levels by allowing glucose to enter the body's cells where it can be used for energy or stored as glycogen. When blood sugar levels are high, such as after a meal, insulin production increases and is released into the bloodstream to signal cells to take up glucose from the blood. Conversely, when blood sugar levels are low, such as during fasting, insulin production decreases allowing for the release of stored glycogen or other sources of energy. In summary, "insulin production" refers to the process by which the pancreas generates and releases this important hormone in response to changes in blood sugar levels.