You hear people dying from dehydration after prolonged exposure quite often, but this is the first time I have ever heard of someone dying from drinking too much water:
A coroner has found a Victorian man died during a Tasmanian bushwalk after drinking too much water.
Jonathan Paul Dent, 30, was an experienced bushwalker in good health when he died in the Dial Ranges, in Tasmania’s north-west.
He had been walking alone and was supposed to meet his wife after four hours, but became lost and disorientated.
Search parties found his body two days later.
Coroner Michael Brett found Mr Dent most likely died from an exercise-related medical condition caused by drinking too much water during prolonged exertion.
Severe symptoms of the condition include confusion, seizures and death.
The autopsy showed Mr Dent’s brain was swollen, indicating he had drunk too much water. [ABC News]
The complete coroners report on this tragic death can be read at this link. According to the link the deceased was not that fit and he over-exerted himself after he got lost. He probably drank a lot of water due to how exhausted he was and ended up drinking too much which caused his death.