Like other populations, patients with diabetes require an average of 2500ml of water per day (about 8 cups of water). In addition to some of the water contained in the diet, other 1600-2000 ml of water needs to depend on the external supply of drinking water. Drinking water includes plain boiled water, weak tea and mineral water, etc., not suitable for drinks containing sugar.
At present, there are a lot of elderly patients with diabetes who are afraid of drinking water, and even limit drinking water deliberately. Because they have the following concerns: firstly, fear of worsening of symptom of polyuria; secondly, fear of the loss of a large amount of glucose from urine; thirdly, fear of the aggravation of the burden of the kidney, and even cause edema. Actually, there is no scientific basis for such concerns. The amount of glucose excreted in the urine of a patient per day is determined by the severity of the diabetes, having nothing to do with the quantity of drinking water and urine excretion. Glucose concentration will be decreased when the urine volume is increased, in this regard, the total volume of glucose in the urine dose not increase. Furthermore, healthy kidneys can be able to discharge acid metabolites and protein products in sufficient quantities every day, although older people tend to be associated with decreased renal function and chronic kidney disease, but the discharge capacity of water is quite large for diseased or healthy kidney. Therefore, drinking more water will not increase the burden on the kidneys, and it will not aggravate the kidney damage or induce edema even if there is diabetic nephropathy or renal insufficiency, unless there is an exception to acute renal failure.
Drinking more water has many benefits for patients with diabetes:
Be able to prevent urinary tract infections, increase the efficacy of antimicrobial agents.
Increase blood volume, improve blood circulation and microcirculation, reduce blood viscosity and the formation of complications of diabetes.
Reduce the plasma osmotic pressure, prevent the occurrence of diabetic hypertonic coma (hyperosmotic nonketotic diabetic coma).
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