A. Insulin stimulates the cells of the body to absorb sugar (glucose) out of the blood. It also inhibits the production of glucose by the liver. In type 1 diabetes, the body does not make insulin.In type 2 diabetes, the body is resistant to the insulin the body does make.All people with type 1 diabetes need to take insulin injections.t also inhibits the production of glucose by the liver. In type 1 diabetes, the body does not make insulin. In type 2 diabetes, the body is resistant to the insulin the body does make.