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Composition on why
The human body contains about 47 liters of water. It turns out that in many of our bodies there is surprisingly much water. For example, the muscles are 75% water, the liver 70%, the brain 79%, and the kidney 83%!
But this body fluid is not pure water. In fact it is a saline solution. Why is this so? According to one scientific theory, all animals living on earth, including humans, are descendants of organisms that appeared and lived in the sea. The body fluid of these creatures was seawater.
Moving on land, they retained seawater as the fluid of their body. But the earth is not able to provide enough salt in its natural form. As the salt dissolves in water, a large part of salt from the soil is washed out with rain water into rivers, seas and oceans. As a result, plants growing on the ground contain insufficient salt.
That’s why animals that eat plants need salt. The body every day loses a certain amount of fluid containing salt, and vegetable food does not
People living far from the sea have an increased need for salt. In ancient Mexico salt was so highly valued that there was even a god of salt. In Europe, in olden times, people were often paid salt for their work. The English word “salary” (salaries) comes from “salt” (salt).
In the human body, salt accumulates mainly on the skin. If a person eats unsalted food, blood loses its salt in various ways. Therefore, the skin should transfer its salt reserves to the blood so that its concentration in the blood is kept constant. This often gives a positive effect on skin diseases. That’s why in some diseases doctors often prescribe salt-free diets.
Salt is removed from the body, mainly by the kidneys. If the kidneys of a person are sick, he is prescribed a diet with a small salt content, so as not to overload them.
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