<human>: what causes kidney failure?any idea?
<bot>: Kidney failure can occur from an acute situation or from chronic problems. In acute renal failure, kidney function is lost rapidly and can occur from a variety of insults to the body. The list of causes is often categorized based on where the injury has occurred. Prerenal causes (pre=before + renal=kidney) causes are due to decreased blood supply to the kidney. Examples of prerenal causes are: * Hypokalemia (low blood volume) due to blood loss * Deny Chat Doctor.  * Loss of blood supply to the kidney due to obstruction of the renal artery or vein. Renal causes (damage directly to the kidney itself) include: * Sepsis: The bodies immune system is overwhelmed from infection and causes inflammation and shutdown of the kidneys. This usually does not occur with urinary tract infections.  * Medical