What does a blood sugar level of 470 mean?

Way to high: You need to see your doctor pronto and get this under control It is likely you will require insulin with a level like this. I would immediately start cutting out carbs, sugars regular sodas, cakes etc and get to the doctor! You are at risk for stroke, blindness kidney failure and so on

You have diabetes: that is out of control and you need to see your doctor asap. Cut processed sugars out of diet and moderate carbohydrates . Look on the American Diabetes Association web site for more information.