What is the purpose of dialysis?

Dialysis is a medical treatment designed specifically for individuals whose kidneys are unable to perform their natural function of filtering waste products from the blood. The primary purpose of dialysis is to remove wastes, excess fluid, and toxins that accumulate in the bloodstream as a result of impaired kidney function. This is crucial as the buildup of these substances can lead to severe health complications and even become life-threatening.

In cases where kidneys are damaged or not functioning—such as in chronic kidney disease or acute kidney failure—dialysis serves as a replacement therapy, performing the essential role of cleansing the blood and maintaining electrolyte balance. The process can either involve hemodialysis, which uses a machine to filter blood outside of the body, or peritoneal dialysis, which uses the lining of the abdomen to filter blood internally.

The other options do not accurately reflect the purpose of dialysis. Enhancing kidney function, producing insulin, or improving mental health are not roles fulfilled by dialysis. Instead, the focus of this treatment is solely on the removal of wastes and managing the consequences of kidney failure.