How does insulin work in the human body?

1. The function of insulin is to stimulate the process of glycogenesis.

2. Islets of Langerhans are produced in response to increased blood glucose levels.

3. The process of storing excess glucose in our body in the form of glycogen in the liver is called glycogenesis and insulin stimulates this process. In this way, when the amount of excess glucose in our blood increases, insulin is secreted and reduces the glucose level. So naturally, if our body does not secrete enough insulin, there will be excess glucose in the blood and the blood glucose level will increase.