Diabetes complications arising out of high blood sugar levels can be really dangerous for a person. In the long term important organs like eyes, heart, kidney, circulatory system and the nerves can be affected. Problems like cataract which involves thickening of the eye lens and retinopathy or damage to the retina because of excessive growth of blood vessels can affect the vision of a person and sometimes very badly damage it too.
Even the kidneys stop functioning properly causing the protein albumin to be sent out through urine. It can also cause diabetic neuropathy, which affects the nerves and starts out with symptoms like tingling and sharp pains in the legs and feet. Thus treating diabetes effectively and ensuring that the complications do not reach out to other systems of the body is very important.