One can be prediabetic which means the blood sugar levels are higher than normal in the blood but not high enough to be diagnosed as diabetes. If the blood sugar level is higher, you can be type I or type II diabetic. Type I diabetes is not very common among diabetics as only 5-10% of people who have diabetes have type I diabetes. Mostly children and young adults are afflicted with type I diabetes. Type II diabetes is more common. It normally comes later in life and there are many lifestyle factors that can attract type II diabetes such as being overweight or continuously consuming unhealthy food. An appropriate diabetes test can tell you whether you have type I diabetes type II diabetes. Gestational diabetes happens to expecting women. It lasts the pregnancy period and normally goes away. But, it can cause complications to the baby.