Insulin is a hormone that allows glucose to move from the bloodstream into the body’s cells. In the cells, glucose is used for energy. When you have diabetes, your pancreas either cannot make any or enough insulin, and/or the insulin it makes does not work well. This results in too much glucose in the bloodstream. Read more in our fact sheet. Insulin fact sheet Insulin is a hormone that allows glucose to move from the bloodstream into the body’s cells. Different people need different types of insulin. Your treatment needs to be tailored to your needs. Download now