What is kidney failure? How can it be treated/prevented?

Can be preventable. Leading causes of kidney failure are diabetes and high blood pressure; kidney failure is often preventable. When kidneys fail, a person cannot excrete the body's toxins or excess fluids. They become anemic because of the lack of epo - put out by the kidneys to stimulate red cell production. Heart disease is virtually inseparable from kidney failure. Dialysis and transplant are treatments.