This is mainly because it is also an important inorganic salt component needed by human body, and sodium exists in human intracellular fluid and bones. Sodium plays a role in regulating water and osmotic pressure, maintaining acid-base balance and enhancing neuromuscular excitability in human body. The production and utilization of ATP, energy metabolism, sugar metabolism and itching utilization all need sodium's participation. When the human body is deficient, there will be fatigue, apathy, listlessness, even fainting when standing up, nausea, vomiting, blood pressure drop, muscle spasm pain, weak pulse, peripheral circulation weakness, shock and so on. Eventually died of kidney failure.
At that time, it was suggested to use less salt because the salt intake of China residents was too high, and the average value was more than twice that recommended by the World Health Organization. Therefore, the Dietary Guide for China Residents recommends that the daily salt intake should not exceed 6 grams (a bottle of wine or a special salt-limiting spoon). In other words, the daily intake of salt is measured, and the lower the better.
To sum up, the intake of dietary salt should not be too high or too low. Too high or too low will affect the heart and kidney function. Therefore:
1. If the dietary sodium intake is too high (including invisible salt intake, such as soy sauce, monosodium glutamate, chicken essence, pickles, bacon, pickles and canned food, convenience food and fast food, bread and dried noodles, etc. ), the salt must be reduced. Excessive salt intake will not only increase blood pressure, but also reduce immunity.
2, if in some special circumstances, such as fasting, eating less, or high temperature, heavy physical labor, sweating, gastrointestinal diseases, anti-bone vomiting, diarrhea, etc. When excessive sodium is lost, it must be replenished in time.