[boop]

I remember in medical school we studied this. A nephrologist told us that this kind of death happens at Oktoberfest in Germany. People not dying from drinking too much beer, but because they get too much water volume in their systems.

[spunkets]

Physiologically it's the result of hypoelectrolyte concentration. The amount of water it takes to do this depends on the available electrolytes in the body before the water is taken. I'd guess hypokalemia would occur first and be most prominent, but hyponatremia and others are occuring at the same time and they are just as important.