A major function of the kidneys is to remove waste products and excess fluid from the body. These waste products and excess fluids are removed through the urine. The production of urine involves highly complex steps of excretion and reabsorption. This process is necessary to maintain a stable balance of fluid and body chemicals.
The critical regulation of the body's salt, potassium and acid content is performed by the kidneys. The kidneys also produce hormones that affect the function of other organs. For example, a hormone produced by the kidneys stimulates red blood cell production. Other hormones produced by the kidneys help regulate blood pressure and control calcium metabolism.
Chronic kidney disease is defined as having decreased kidney function, and therefore, abnormal regulation of fluid and body chemistry for three months or more.
There are many causes of chronic kidney disease. While some causes are congenital or inherited, others are caused by diseases such as diabetes and high blood pressure. Kidney stones may also cause chronic kidney disease. Kidney Disease Resources Detection and Treatment Kidney Stones Kidney Transplantation This information was compiled from the National Kidney Foundation. Please see them for more information on kidney disease.