Hemodialysis is a medical procedure used to treat individuals with kidney failure by filtering waste and fluid from their blood. During hemodialysis, the patient's blood is circulated through a machine that filters out toxins, excess fluid, and electrolytes before returning it to the body. This process helps to maintain the balance of chemicals in the blood and control blood pressure. Hemodialysis is typically performed several times a week and is a vital treatment for individuals with end-stage renal disease. Ongoing research in this area focuses on improving the efficiency and safety of hemodialysis procedures, as well as developing new techniques and technologies to enhance patient outcomes and quality of life.