The kidneys remove the body’s wastes from the blood. If hypertension thickens the arteries to the kidneys, less waste can be filtered from the blood. As the condition worsens, the kidneys fail and wastes build up in the blood. Dialysis or a kidney transplant is needed when the kidneys fail. About 25% of people who receive kidney dialysis have kidney failure caused by hypertension.
You can learn more about how high blood pressure affects the kidneys here.