what is the purpose of the kidney?
The kidneys are a pair of organs, each about the size of a fist, located on either side of your spine. Theyâre responsible for purifying your blood by removing waste and excess fluid from your body. When the kidneys donât work properly, dialysis is used to perform the function of the kidneys. Dialysis is a treatment that filters and purifies the blood using a machine. This helps keep your body in balance when the kidneys canât do their job. Dialysis has been used since the 1940s to treat people with kidney problems.