Chronic Kidney Disease (CKD) is a relatively common disorder in which one or both kidneys are damaged. CKD affects approximately 12 million people in this country. At Mount Sinai our medical experts are highly experienced in treating the range of kidney diseases and related conditions. The Chronic Kidney Disease Program also promotes patient education. Understanding the role of the kidneys and recognizing potential problems is the best way to guard against disease and alert the patient to changes that should prompt a visit to his or her physician.