Electrolytes including potassium, sodium, and magnesium affect kidney and heart function. Too much water disrupts crucial functions.
Too much water can lower blood sodium, causing cells to expand and retain fluid.
Overactive Bladder (OAB) symptoms might worsen with excessive fluid intake. Even without OAB, your bladder may suffer.
Healthy kidneys can control how much water your body retains or excretes, but they can get overloaded.
In severe situations, cerebral edema, heart failure, and other organ shutdowns can kill.
Water-drinking contests, sports overhydration, and military training have caused deaths, but they are rare.