Kidney function is not very good, should you drink more water, or drink less water?

After learning simple physiological and health knowledge, you may remember that the function of the kidney is to regulate the balance of water and electrolytes; to remove waste; to regulate blood pressure; to maintain bone health; and to secrete erythropoietin. The main risk factors for impaired kidney function are high blood pressure, obesity, diabetes, high uric acid, and hyperlipidemia. The incidence of these health problems is high, so over time, it will lead to irreversible changes in kidney function and structure. The ensuing question is, is there a relationship between drinking water and kidney function? When the kidney function is not good, how should we grasp the amount of drinking water? Let’s talk about it now.

We all know that water is an indispensable substance in the human body. In fact, 65% of the ingredients in the human body are water. Do not eat food, different people, according to physical conditions, can persist for a long time, but broken water, can only live up to 4 days. The supply of water required by the human body is mainly food and beverage from external sources, a small amount of material metabolism from the body; the organs involved in the discharge of water, mainly the kidneys, skin, lungs, and gastrointestinal tract.

Careful accounting, the human body will be filtered by the kidney every day, discharging about 1500 ml of water in the form of urine; 750 ml of water is discharged from the skin by sweating; in the process of breathing, 400 ml of water is lost; 150 ml of drainage is taken by the feces; Drain 2800 ml of water. Under normal eating conditions, the food provides about 1000 ml of water; the metabolism produces 300 ml. Therefore, normal body activities require 1,500 ml of water per day by drinking water. In special cases, such as vomiting or diarrhea, more water will be lost, which needs to be supplemented by drinking plenty of water or infusion to prevent dehydration.

When the renal filtration function is impaired, it will first be reflected in the urine, the number of urination, urine odor and color changes. The common manifestations are the number of urination, especially the increase in the number of nocturia; foamy urine or hematuria may also occur. . Impaired renal filtration function, at the same time will increase protein excretion, causing periocular edema, especially in the morning when the eyelids continue to edema, in severe cases, the body’s water accumulation, resulting in edema of the hands, feet, ankles and other parts. In addition, there will be fatigue, itchy skin, back pain, shortness of breath, and bad breath.

From the process of impaired renal filtration function, proteinuria excretion increases, glomerular damage will gradually increase, eventually leading to selective loss of filtration barrier, and a large amount of plasma protein is filtered from the glomerular capillary wall. , which leads to glomerular sclerosis. Therefore, as early as more than 100 years ago, the restricted protein diet was an important measure to deal with chronic kidney disease. Other measures include the control of water, as well as the intake of sodium, potassium and phosphorus. The right amount of water is a key factor in maintaining kidney function.

When the kidney function is impaired, the concentration of the kidney is reduced, and the amount of urine is multiplied. In this case, it is necessary to prevent dehydration. Therefore, it is necessary to increase the amount of drinking water; when the kidney function is severely damaged, edema occurs. In the case of oliguria or anuria, excessive intake of water can lead to water retention, exacerbation of edema and high blood pressure, which limits the intake of fluids.

The normal adult’s daily urine volume is between 500 and 4000 ml. If the kidney function is impaired, but there is no serious edema, heart failure, high blood pressure, and the urine volume is normal, the total daily intake of water does not have to be strictly limited. It can be in the range of 1500 to 2000 ml; if there is oliguria and the amount of urine is less than 400 ml per day, it is necessary to appropriately limit the amount of water intake. In general, when there is severe renal dysfunction, it is necessary to determine the amount of water intake the next day based on the amount of urine in the previous day and the overall condition of the body under the guidance of a professional. The correct way to drink water is to take active, small, and multiple times of water, 50 to 100 ml each time. Don’t wait until you are thirsty. It is best to add boiled water to prevent excessive intake of polysaccharides in the beverage.