There are three main types of diabetes, and they are type I, type II and gestational.
Types I Diabetes: Type I diabetes commonly occurs in children and adolescents; however, it can develop at any age. In type I diabetes, the body produces little or no insulin and therefore, requires daily insulin dose.
Type II Diabetes: In type II diabetes body is cannot make use of the insulin that it produces. It is common in adults, especially in middle-aged, overweight, and older people.
Gestational Diabetes: It usually develops in some women during pregnancy. Usually, after the baby's birth, gestational diabetes disappears. Women who develop gestational diabetes are at increased risk of developing type II diabetes later in life.