Diabetes is a disorder of the sugar metabolism, that occurs when the body cannot produce enough insulin (the hormone that regulates blood sugar) or/and cannot effectively use the insulin it produces. Without the effect of insulin, glucose is accumulated in the body, leading to high glucose levels in the blood, which in turn causes health problems related to diabetes. There are mainly 2 types of diabetes; Type 1 diabetes is due to an autoimmune destruction of the insulin-producing cells in the pancreas. Type 1 diabetes usually appears in people who have one or more genes that make them susceptible to the disease, with or without a family history of type 1 diabetes. Type 2 diabetes is much more common and has several predisposing factors, such as genetic causes (family history, increased risk in certain ethnic groups) and environmental conditions (unhealthy diet, obesity, lack of physical activity).