DEAR DOCTOR K: I have Type 2 diabetes. My doctor said that kidney disease is a potential long-term complication of diabetes. What's the connection between the two?
DEAR READER: People with diabetes have elevated levels of blood sugar. Left untreated or poorly treated, diabetes can cause serious complications, such as eye, nerve and kidney damage. An important cause of all these complications is high blood sugar levels over many years. Other factors, such as high blood pressure, also contribute.