text: For several reasons, one is the cost of the machine and technology- the other is needing a licenced professional to administer  and monitor the patient- after all, all of their blood is being Filtered thru a machine, things Can go wrong.\n\nWhat does dialysis do?\n\nLike healthy kidneys, dialysis keeps your body in balance. Dialysis does the following:\n\n    * removes waste, salt and extra water to prevent them from building up in the body\n    * keeps a safe level of certain chemicals in your blood, such as potassium, sodium and bicarbonate\n    * helps to control blood pressure