In all forms of diabetes, levels of sugar in the blood are too high. So the primary goal of diabetes treatment is to bring sugar levels down to as close to normal as is safely possible. Most aspects of a diabetic's treatment plan (measuring sugar levels, taking diabetes pills or insulin shots, exercising, losing weight, planning meals) are aimed at helping him reach his target sugar level. High sugar levels can affect many parts of the body. They can lead to eye, nerve, and kidney diseases. High sugar levels also make it easier to get infections. They can blur your vision or make you feel tired or thirsty all the time. People with diabetes also are more likely to develop other health problems, including high blood pressure, high cholesterol and fat levels, and heart disease. Diabetes sometimes damages kidneys so badly that they no longer work. When kidneys fail, one option is a kidney transplant. There are also pancreas transplants, as well as islet cell transplants.