Type 1 diabetes
Type 1 diabetes (dye-ah-BEET-eez) Type 1 diabetes is thought to be an autoimmune disorder that attacks and destroys the cells in the pancreas that produce insulin. (An autoimmune disorder occurs when the body's immune system, which usually helps the body fight diseases, turns against its own tissue.) Type 1 diabetes was known as "insulin-dependent diabetes mellitus", or "juvenile diabetes". Without insulin, the body is not able to use blood sugar (glucose) for energy. To treat the disease, a person must inject insulin, exercise daily, and test blood sugar several times a day.