Chronic kidney weakness or renal insufficiency is a slow decline in the detoxification function of the kidneys, usually progressive over years. Various diseases can lead to a permanent loss of functional kidney tissue. Usually both kidneys are affected.
Chronic kidney weakness is present when the kidney function falls below about 60% of normal. Complete renal failure with complete loss of function is called terminal kidney failure. Chronic kidney weakness, especially in the advanced stages, also impairs the function of other organs and thus damages the entire organism. For example, kidney weakness has a negative effect on blood pressure, blood formation, bone strength, vascular calcification and the hormone system. It is true that the main task of the kidneys is to filter the blood and excrete excess metabolic products and harmful substances through the urine. But they also produce hormones that control blood pressure and blood and bone formation and keep our salt and water balance constant.
Chronic kidney weakness is divided into five stages depending on its severity. The higher the stage, the greater the loss of kidney function, e.g. the kidneys almost no longer function in stage 5, and in stage 3 they are about 30 to 60% less functional. Chronic kidney weakness often leads to complete failure of the kidneys for years without treatment. Due to the lack of detoxification function of the kidneys, almost all organs are damaged (uremic syndrome). At this stage, stage 5 of chronic kidney weakness, kidney failure can no longer be treated with medication. The lack of detoxification and water excretion by the kidneys must then be replaced by artificial blood washing (dialysis) or a kidney transplant (transplantation of a new kidney).