Diabetes mellitus originates from a functional disorder of the pancreas. Two main types of this disease are differenciated. In the juvenile type I diabetes, insufficient insulin is produced in the pancreas. The type II diabetes, in contrast, mostly only originates at an older age. In this case, the insulin production can very well be sufficient, but the body is not able to use the insulin.
As a consequence of this metabolic disease, the smallest blood vessels in the entire organism change within the course of about 5 years. As a result, the feared late complications, such as renal deficiencies up to complete failure, damage of the nerves, premature arteriosclerosis originate. In addition, wound healing is delayed, and many diabetics suffer from "open" legs. Due to changes in the larger coronary vessels, often considerable cardiocirculatory problems occur. In the eye, diabetes results in a disease of the retina called diabetic retinopathy.