When we drink more fluids than we need, the body simply excretes it, but extra food is stored. Why isn’t the excess passed like fluids?
In: Biology
Your body isn’t passing the water just because it’s excess. It’s using the water to flush out waste products like urea.
It’s also carefully calibrating how much fluid and electrolytes are in your blood. Potassium in particular needs to be within a tight ratio to everything else or the heart stops working right.
To maintain these ratios it needs to always have just a little extra of everything. It can always dump the excess if it needs to, but it can’t create them from nothing if it doesn’t have enough.
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