||Sometimes the kidneys donít work well.
They lose their ability to filter wastes out of your blood,
they donít produce urine the way they should, and excess wastes and chemicals
start to build up in the body. This buildup of wastes and extra fluid will
make you feel tired.
If your kidneys donít work, this is known as kidney
failure or end-stage
renal disease (ESRD). Without treatment (that is, dialysis or a kidney
transplant), the buildup of toxins, extra fluid, and dangerous levels of
minerals in your blood will eventually cause death.