For many years, doctors and nutritionists advised to limit salt intake. Sodium chloride is not the most useful substance, but it is necessary for the human body. The absence of salt also leads to serious diseases. Before scientists have shown that a deficiency of salt increases the likelihood of infections.
In the experiment, the scientists observed two groups of mice. One received regular food, other salted. Mice in the second group rarely suffered from infections and had a more robust immune system.
Experts believe that in certain concentrations of sodium chloride is useful to all living organisms. Salt can act as an "antibiotic". But forget about these medicines should not like to abuse the salt during illness.