Many people do not understand why the heroes of films and books, finding themselves in the ocean, die of thirst, because there is so much water around.
The reason is that a person cannot quench his thirst with sea water, and all because it contains a large amount of salts.
Of course, salt is necessary to maintain vital functions of the body.
But if its concentration in the body is too high, the body will have to dissolve its excess and remove it from the body.
As you know, water is excreted mainly through urine, and the kidneys are responsible for its production.
If we take into account that a liter of sea water contains about 35 g of salt, and a person needs only 6 g per day, then in order to get rid of excess salt, your body will need to produce about 1.5 liters of urine - and you only drank 1 liter.
This means that water will have to be taken from the cells.
As a result, the person faces dehydration, kidney failure and death.
