Diabetes is a disease in which the body lacks the ability to produce insulin or use insulin properly. What is insulin?.Insulin is a hormone that is needed by the body to convert glucose, sugar or starches into energy. So this glucose or sugar sits in the blood and does not go to the cells for energy. So your blood sugar levels remain high but you are weak and lack energy. The cause of diabetes remains unknown. But according to research the major causes of diabetes are genetic factors, lack of exercise, obesity, and environmental factors. There are four types of diabetes. Type 1( IDDM),Type 11 (NIDDM)Gestational diabetes and Prediabetic.