What causes diabetes mellitus type 1 to develop in children?

Autoimmunity. Autoimmune destruction of beta cells in the islets of pancreas abrogates the ability to produce insulin. This may be instigated by viral infection, however no specific agent has been identified.

Related Questions

What kind of condition is diabetes mellitus type 1 (diabetes type 1)?

Inherited diabetes. Type 1 diabetes mellitus, known as childhood or Insulin dependent diabetes, occurs in about 1 in 10 cases of diabetes, the rest being of type 2. Read more...
Autoimmune diabetes. Actually, the term 'juvenile diabetes' is no longer used since there are adults who develop type i diabetes, due to the same autoimmune destruction of the pancreas, resulting in zero Insulin production. "insulin-dependent" diabetes is also inaccurate as many type 2 diabetics (related to Insulin resistance and obesity) ultimately require Insulin to control blood sugar. Read more...
Lack of insulin. Due to destruction of the Insulin producing cells of the pancreas, the body is incapable of making insulin. It often, but not always, occurs in children and young adults. It must be treated with insulin. Type 2 is due to the body's inability to use Insulin efficiently. It can be treated either with pills or insulin, and usually, but not always, occurs in adults. Read more...
Inactive pancreas. Type 1 diabetes is an immune disorder in which the body attacks and destroys insulin-producing beta cells in the pancreas. As a result, the body cannot produce Insulin and glucose stays in the blood, where it damages all the organ systems. Because people with type 1 diabetes must take Insulin in order to survive – and because it often strikes children - this form of the disease is commonly refer. Read more...