Diabetes is disease in which the hormone insulin is not adequately produced or used by the body. Insulin is needed for cells to take up glucose after it is broken down from sugars, starches and other food that we eat. When working properly, this provides the fuel necessary for activities of daily living. While the exact cause is not completely understood, genetics is known to play a big role. However, environmental factors such as obesity and inactivity have been found to play a big role.