How will diabetes affect the kidneys, eyes & feet?

Blood vessels: Diabetes is primarily a blood vessel disease that over the years will affect these areas decreasing blood flow to them and causes microscopic bleed from them.

Blood Vessels : Diabetes damages the vasculature of the entire body. However, smaller vessels such as those in the eyes, kidneys, and heart, brain, and nerves are affected most severely. The retina is actually brain tissue. The excess glucose in the blood can also lead to ocular strokes (vein or artery occlusions), faster development of cataracts, and injury to the optic nerve, dry eyes, and neovascular glaucoma.