“Most people know that a major function of the kidneys is to remove waste products and excess fluid from the body. These waste products and excess fluid are removed through the urine. The production of urine involves highly complex steps of excretion and re-absorption. This process is necessary to maintain a stable balance of 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.  The kidneys are powerful chemical factories that perform the multiple functions”

National Kidney Foundation (www.kidney.org/kidneydisease/howkidneyswrk)