A complication that can occur in diabetes is damage to the kidney and, by the way, yet another is damage to the eye. LetÕs talk about each of those: Damage to the kidney occurs because the diabetic state can eventually through time destroy the little filtering mechanism in the kidney and therefore we stop making urine and all of the poisons in the blood build up in the blood. ThatÕs called renal failure or Uremia. That requires treatment with dialysis or with a new kidney Ð a transplant. In the eye, there can be damage to small blood vessels that eventually lead to blindness. In fact, the number one cause of blindness in the United States is the diabetic state.