Should you drink sea water if stranded at sea?

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Rudy Shanahan asked a question: Should you drink sea water if stranded at sea?
Asked By: Rudy Shanahan
Date created: Mon, May 24, 2021 9:13 PM
Date updated: Fri, Jul 29, 2022 11:44 AM

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Seawater contains salt… Human kidneys can only make urine that is less salty than salt water. Therefore, to get rid of all the excess salt taken in by drinking seawater, you have to urinate more water than you drank. Eventually, you die of dehydration even as you become thirstier.

In 1987, a study with rats concluded that “when a man is stranded at sea, it is not advisable to drink all the fresh water and then to be compelled to drink seawater when dehydrated.” Instead, researchers at Israel's Ben-Gurion University recommend, “slowly increasing the seawater uptake” when the survivor is still ...

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