When your blood sugar levels are high, your kidneys work overtime to filter out the excess glucose. Hydration acts as the primary fuel for this natural detox process, that reduces the blood sugar.
Here is exactly how drinking water helps your kidneys flush out surplus sugar
1. The Sugar Filtering Threshold
Your kidneys act like a highly efficient waste-treatment facility.
Under normal conditions, your kidneys filter glucose out of the blood and then completely reabsorb it back into your bloodstream, this can reduce the blood sugar.
However, your kidneys have a maximum capacity called the renal threshold (usually around 180 mg/dL).
When blood sugar climbs above this threshold, the kidneys can no longer reabsorb the excess glucose. It spills over into your urine to be expelled from the body. This can cause increase in blood sugar. Drinking water will help to reduce the blood sugar.
2. Water Proclaims the “Flushing Effect”
Glucose is highly osmotic, meaning it acts like a sponge for water. As excess sugar spills into your urine, causing rise in blood sugar, it forcibly drags water out of your body’s tissues along with it. This is why frequent urination and intense thirst are classic signs of high blood sugar. This will lead to tiredness if the blood sugar is properly checked.
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If you do not drink enough water to replace this loss:
- Your blood sugar will increase due to highly concentrated and thick blood.
- Your blood sugar will drop the blood volume, reducing the efficiency of your kidneys.
- Your blood sugar levels artificially concentrate, making the numbers read even higher.
By drinking plenty of water, you increase your total blood volume.
This dilutes the concentration of sugar in your bloodstream and provides your kidneys with the fluid volume they desperately need to safely filter and wash the excess glucose out through your urine.
3. Preventing Kidneys from Going into Survival Mode
When you are dehydrated and your blood sugar is high, your body secretes a hormone called vasopressin. This hormone signals your liver to produce more blood sugar and tells your kidneys to hold onto water at all costs. By staying fully hydrated, you suppress vasopressin, keeping your liver from dumping unneeded glucose into your system and allowing your kidneys to filter waste freely.
