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August 7, 2024
We’re all guilty of it. Not leaving the house without our huge, 50-ounce water jugs to run an errand or go to work. At this rate, we might even bring them to check the mailbox. Many of us are refilling these bottles at least once a day, staying hydrated. But is it possible that we’re…too hydrated?
Well, the short answer is yes.
On average, the kidneys, which are responsible for producing urine, are capable of removing about 1.0 liter of fluid per hour. Drinking more than 1.0 liter of water increases water content in the blood so much so that it dilutes the blood sodium content, which normally falls between 135 and 145 mEq/L. Blood sodium levels dropping lower than normal, also known as hyponatremia, can allow for excess water to enter cells and cause them to swell. When cells in the brain swell, this can lead to complications, like seizures or even death.
So, how much water should we be drinking?
On average, men require 15.5 cups, or 124 ounces, and women require 11.5 cups, or 92 ounces of water every day. However, there are other factors that can determine how much water intake you require day to day. This includes…
- Activity level – losing water through excess sweat increases your water intake needs.
- Health conditions – certain conditions, like kidney disease, could lower your water intake needs.
- Medications – some anti-inflammatory drugs and antidepressants that cause water retention can lower your water intake needs.
But how do I know if I am drinking too much water?
There are various signs and symptoms that can come about from hyponatremia. Among the most common are….
- headaches
- nausea
- vomiting
- raised blood pressure
- difficulty breathing
- drowsiness
- muscle pain or weakness
- double vision
And how much am I at risk for hyponatremia?
Hyponatremia is very rare but is most common among athletes that replenish lost water and electrolytes during and post-exercise in excess. If you think you might be at risk for or are showing signs and symptoms of hyponatremia, seek medical attention immediately and talk with your healthcare team about your concerns.
And next time you bring your Stanley tumbler to the grocery store, take baby sips!