According to the regulations of "Dietary Pagoda", adults should not consume more than 6 grams of salt every day, so as to keep healthy!
The main component of salt is "sodium chloride", which will be decomposed into sodium ions and chloride ions after entering the human body. When the sodium ion in the blood exceeds the standard, the kidney will start the water reabsorption function, and a large amount of water will re-enter the blood circulation, which will lead to the increase of blood volume and cell osmotic pressure, and will also cause the symptoms of water and sodium retention, so hypertension will come to you on its own.
However, this does not mean that everyone needs to absolutely keep the sodium intake too low! You know, sodium ion is an indispensable component of human body, which is related to muscle and cardiovascular function. If the sodium intake is kept too low for a long time, the following problems will follow:
1. Hyponatremia syndrome: As the name implies, hyponatremia syndrome is a disease caused by the decrease of sodium ions in the body. When the sodium ion intake is too small, the sodium content in serum drops rapidly, and the osmotic pressure inside and outside the cell loses its original balance, so hyponatremia syndrome will also occur. In severe cases, it may even lead to brain edema and death!
2, salt-sensitive hypertension: excessive pursuit of low-salt diet is also a major factor in the pathogenesis of hypertension. This is mainly because the long-term intake of sodium ions is too small, and the human body's sensitivity to salt will gradually increase. In later life, once the sodium intake level exceeds the standard, it will stimulate the secretion of hormones such as adrenaline and angiotensin, leading to abnormal blood pressure. Rising, salt-sensitive hypertension;
3. Diabetes: As mentioned above, sodium ion helps to maintain the balance of plasma osmotic pressure. When the sodium ion intake is too small and the plasma osmotic pressure is unbalanced, the body will fall into the "renin" state, that is, renin-angiotensin-aldosterone system. This process is called RAAS in clinic. In the whole process, it will affect glucose metabolism and stimulate the islet system, leading to imbalance of glucose metabolism, which may lead to diabetes in the long run.
In this case, how much salt is normal?
First of all, we should understand that the relationship between salt and hypertension is not "salty taste", but the sodium ion composition it contains. According to the contents published by the World Health Organization, an adult's daily intake of 2,000 mg of calcium is enough to maintain the body's needs, which is about 3-5 grams when converted into salt;
But it should be noted that in addition to salt, many condiments also contain salt, such as soy sauce, soy sauce, chicken essence and monosodium glutamate, and some natural foods also contain sodium. Under normal circumstances, the sodium intake from food accounts for about half of the total sodium needed by the human body in a day, so taking about 3 grams of salt a day can be counted as a low-salt diet!