Nine common misconceptions about kidney disease One: Foamy urine means proteinuria Foamy urine also occurs when the concentration of urea in the urine is high. An easy way to tell is that the foam covered with proteinuria is fine and sticky and does not dissolve easily right away. Second: frequent urination is kidney disease In the early stages of kidney disease, frequent urination does occur because the kidneys’ ability to concentrate decreases and more water is needed to get rid of metabolites. However, frequent urination may also be caused by other reasons, such as psychological frequent urination, cystitis or urethritis, etc. Third: Kidney deficiency equals poor kidney function Kidney deficiency is a term used in Chinese medicine, while kidney function refers to the function of the kidneys in removing metabolic waste from the body and regulating electrolyte and acid-base balance in the body. The two cannot be equated. 4: Cloudy urine means kidney deficiency The most common reason for cloudy urine is that the body has consumed too much protein, resulting in increased phosphate and uric acid levels in the urine. Other possible causes include celiac disease, bacterial infections, etc. Five: eat kidneys for kidney The kidneys of animals or poultry, the main component of which is protein, have about the same nutritional value as other parts of meat. Six: hematuria must be a kidney problem Hematuria may be a symptom of hemorrhagic cystitis or even malignant tumor, not necessarily kidney disease. The presence of hematuria must be promptly seen to determine the cause. Seven: Kidney diseases are not hereditary Most of them are not, but kidney diseases such as polycystic kidney and congenital abnormalities of renal tubules are hereditary. Eight: swollen calves is a manifestation of kidney disease Most edema has nothing to do with kidney disease. Hot weather, stress, and prolonged standing and sitting may induce idiopathic edema. Even pathological edema may be triggered by diseases such as varicose veins in the lower limbs and abnormal thyroid function. Nine: low back pain is a symptom of kidney disease Most low back pain is not caused by kidney disease, unless the kidneys have infections, stones or edema, etc. There will not be low back pain. Low back pain is more likely to be a skeletal muscle problem. In addition, diseases such as pancreatitis can also lead to the appearance of low back pain.