Kidneys perform the function of purifying the blood, remove excess water and toxins from the body. Dialysis is a procedure that works like artificial kidneys and purifies the blood with the help of advanced machinery. It is done for the people whose kidneys cannot perform its functions anymore.

Kidneys are paired organs that purify the blood, controls body fluid and electrolytes and also process the waste out of the body. It is bean-shaped, of about 4 to 5 inches in length that roughly resembles the size of a fist. It sits beneath the ribs, just behind the belly. It purifies the blood by filtering them, from where it absorbs back the minerals, salts, and water, and removes the waste in the form of urine.