Explanation

The pancreas is an organ located behind the stomach that produces insulin. Insulin is a hormone that helps control blood sugar levels. Special cells in the pancreas called beta cells make and release insulin into the bloodstream.

When you eat food, your blood sugar rises as your body breaks down carbohydrates. Insulin acts like a key that opens cells to let sugar inside for energy. Without enough insulin, sugar stays in the blood and can cause diabetes.

The pituitary gland controls growth and other hormones but not insulin. The thyroid gland controls metabolism with different hormones. Adrenal glands produce stress hormones like adrenaline, not insulin.