Diabetes mellitus DM is a chronic disease that occurs when the pancreas does not produce enough insulin or when the body does not effectively use the insulin it produces Most common types of diabetes Type 1 diabetes It is characterized by poor insulin production and requires daily administration of this hormone Type 2 diabetes This variation is due to an ineffective use of insulin which accounts for most of the global cases and is largely due to excessive body weight and physical inactivity Gestational diabetes is characterized by increased blood sugar or glucose during pregnancy Women with gestational diabetes are at higher risk for complications during pregnancy and childbirth In addition to being at biggest exposure of developing type 2 diabetes in the future