Because of the absolute or relative lack of insulin in the body, diabetic patients can't make full use of blood sugar and excrete it with urine, and urine sugar increases, taking away more water in the process of urine sugar excretion, and even some patients have a significant increase in nocturia, with an average of one urination per hour;

Drinking more water is due to the dehydration of cells after a large amount of water is excreted with urine, and the body produces thirst through feedback regulation, that is, taking a large amount of water on behalf of others.

Extended data:

1, diabetic patients need a little more water than ordinary people, and it is recommended to be around 2500 ml. It is best for patients to estimate their drinking water by measuring their urine volume. But it is not advisable to drink too much water at once, which will not only dilute the gastric juice, cause indigestion, but may even cause water poisoning.

It should be noted that those with special circumstances such as cardiac and renal insufficiency, edema of lower limbs and whole body should reduce the amount of drinking water appropriately according to the doctor's advice.

2. Replenish water in time. In the case of high temperature in summer, exercise and go out to play. You sweat a lot, sugar friends should replenish water in time. In some special cases, sugar friends should take the initiative to drink more water. Such as thirst, fever, hyperglycemia, diabetic ketosis, diarrhea, after bathing, etc. In addition, after eating hot pot and big meal, we should also increase the amount of drinking water to promote blood circulation and accelerate metabolism.

References:

People's Health Network-Diabetic patients should drink less water and don't be afraid of dehydration and kidney damage.

References:

People's Network-The early symptoms of diabetes are diversified, so don't stick to "three more and one less" and delay the opportunity.