Who Gets Type 1 Diabetes?

Up to 800,000 people in the U.S. are estimated to have type 1 diabetes, with about 30,000 new cases diagnosed each year. It is much less common than type 2, however, consisting of only 7% to 10% of all cases of diabetes. Type 1 can occur at any age but usually appears between infancy and the late 30s, most typically in childhood or adolescence. Boys and girls are equally vulnerable.

Although still an uncommon disease, the incidence has been rising over the past few decades in certain regions of the U.S. and some European countries, particularly in Finland and England. While type 1 diabetes appears to be most common in people of northern European, it is rare among Asians and African Americans. The incidence of type 1 is increased among people with certain autoimmune diseases, including Grave's disease, Hashimoto's thyroiditis, Addison's disease, and pernicious anemia.

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