Like any other substance that is present in your body, sugar should be of just the right amount. Sugar is a carbohydrate that your body needs to have energy. If your blood has it in the rightÂ levels, then you can go about your day with the right amount of energy. When a person is diagnosed with diabetes, sugar in the blood is not regulated very well. There are times that the sugar level will plummet (hypoglycemia) and there are times when it shoots up (hyperglycemia). Hyperglycemia is a condition wherein the other visceral organs are deprived of sugar and the others are practically overloaded with it, particularly the eyes, kidneys, blood vessels, and nerves.