Insulin is produced by the pancreas.
The pancreas is a glandular organ located in the abdomen, behind the stomach. It has both exocrine and endocrine functions. The exocrine function of the pancreas is to secrete digestive enzymes into the small intestine to aid in the digestion of food. The endocrine function of the pancreas is to secrete hormones into the bloodstream that regulate blood sugar levels.
Insulin is one of the hormones produced by the endocrine cells in the pancreas called beta cells. It plays a crucial role in regulating blood sugar levels by promoting the uptake of glucose from the bloodstream into the body's cells. Insulin helps to lower the amount of glucose in the bloodstream by signaling the liver, muscles, and fat cells to take up glucose from the blood and store it for later use as energy.
If the body does not produce enough insulin or cannot use it effectively, this can result in high blood sugar levels, a condition known as diabetes.