How much salt the body needs
• How much salt is necessary to the body
Sol - is not just 40 percent and 60 percent sodium chloride; salt - is the most important culinary ingredient.
But there is one question that is raised by many: how much salt we need to be healthy? After all, it contains the most important minerals for life - primarily sodium.
"Sodium - is the most important extracellular electrolyte, - says Paul Walton, Professor of Public Health from Tulane University. - It plays an important role in many, very many processes in our body. "
Electrolyte - a substance that dissolves in water and creates in it positively and negatively charged ions, through which water can conduct electricity. The right amount of these ions play a key role in regulating many body functions, including the maintenance of water balance, blood pressure and work the nerves and muscles.
And yet, no matter how important was the sodium in the diet of most people is too much. According to official recommendations, the average adult should receive a maximum of 2,300 milligrams of sodium each day, while the average actual evaluation of its use - about 3,500 mg. A diet with a large content of sodium result in hypertension (high blood pressure), which can significantly increase the risk of heart attack or stroke. But how much salt we need just to survive?
"The minimum amount - about 1,500 mg per day," - says Welton.
This is the amount of salt that should be consumed adults with high blood pressure and children under the age of three years.
Other scientists believe that you can do less. According to the American Heart Association, the minimum physiologic need for sodium is less than 500 mg per day - this is about a quarter teaspoon table salt.
However, for most people to get so low in sodium - a task almost impossible. Of all 3400 mg sodium, which receives daily average person, about 71 percent (or about 2,400mg) are in salt added during cooking and food processing. But, according to Welton, non-edible salt on your dinner table is unlikely to play a significant role - the most of this sodium you get out of the salt that was added to the food in the workplace.
However, some groups of people may be at risk of developing hyponatremia - a state where the sodium in the body is too small, and the cells become swollen, overflowing with water. This can cause many health problems: headaches, nausea, fatigue - down to the risk to life. Older people do not work very well the kidneys; those taking drugs affecting the level of sodium (e.g., diuretics, which help get rid of excess water, and along with it and from sodium); athletes who sweat a lot and drink a lot of water, but do not make up for salt reserves in the body - they can interfere with hyponatremia (which is why many sports drinks add various electrolytes).
Yet most do not need to worry about the fact that the salt in their body not to be missed. no matter how much you did not get it out of the ordinary, everyday meal - probably more than enough to make your stand feel comfortable.
"I do not get too hung up on these 1500 mg, - says Welton. - Most of us consume much, much more. "