Urinary incontinence is the involuntary leakage of urine; in simple terms, to wee when you don't intend to. It is the inability to hold urine in the bladder because voluntary control over the urinary sphincter is either lost or weakened.
By Mayo Clinic Staff. The exact cause of type 1 diabetes is unknown. In most people with type 1 diabetes, the body's own immune system â which normally fights harmful bacteria and viruses â mistakenly destroys the insulin-producing (islet) cells in the pancreas.
Causes of Diabetes. The causes of both Type 1 and Type 2 diabetes are unknown, but a family history of the disease increases the risk for both types, leading researchers to believe there is a genetic component. Some scientists believe that a flaw in the body's immune system may be a factor in Type 1 diabetes.