Diabetes Diabetes is a disease in which your body is unable to properly use and store glucose. Glucose backs up in the bloodstream causing your blood glucose or There are two major types of diabetes, Type I and Type II. In Type I diabetes, your body completely stops producing any insulin, a hormone that lets your body use glucose found in foods for energy. People with Type I diabetes must take daily insulin injections to survive. This form of diabetes usually develops in children or young adults, but can happen at any age. In Type II diabetes, the body produces insulin, but not enough to properly convert food into energy. This form of diabetes usually occurs in peopl