In recent years, many experiments have confirmed that there is a certain correlation between salt intake and the incidence of hypertension; excessive salt intake in the diet can cause hypertension. The World Health Organization (WHO) recommends that everyone consume less than 5g of table salt per day to prevent coronary heart disease and hypertension. In our country, it is considered that adults need to consume 6g of table salt per day to meet the body’s need for sodium.

Table salt refers to salt from different sources such as Fuzhou, well salt, mineral salt, lake salt, and soil salt. The main component of table salt is sodium oxide, and the national standard stipulates that the sodium oxide content of well salt and mineral salt cannot be less than 95%. In our country, the barium content is not allowed to exceed 20Mg/kg. Excessive magnesium and calcium in table salt can make the salt taste bitter, and excessive fluorine content can cause poisoning.

The three functions of table salt:

Maintain the osmotic pressure of extracellular fluid plasma

Na and Cl are the key cations for maintaining the osmotic pressure of extracellular fluid plasma; K and HPO4 are the key cations for maintaining the osmotic pressure of intracellular fluid plasma. In the total production of cations in extracellular fluid, Na accounts for more than 90%, and in the total production of cations, Cl accounts for about 70%. Therefore, table salt plays a key role in maintaining plasma osmotic pressure, affecting the trend of water in the human body.

Participate in the adjustment of body acid-base

Bicarbonate sodium produced from Na and HCO3 has a regulatory effect in the blood. There is also a balance between Cl and HCO3 in the blood and red blood cells. When HCO3渗入出去 from red blood cells, the cations in red blood cells decrease, and Cl enters the red blood cells to maintain the balance of polarity. Conversely, it is the same.

The content of chloride ions in the body participates in the transformation of gastric juice

Gastric acid is strongly acidic and alkaline, with a pH of about 0.9-1.5. Its main components include pepsin, hydrochloric acid, and mucus. The parietal cells in the gastric glands can metabolize hydrochloric acid. The parietal cells bind HCO3 into the blood, while metabolizing out H into gastric acid.

According to the research of authoritative experts, there is a certain correlation between the amount of salt intake and the incidence of hypertension; the more salt one eats, the higher the incidence of hypertension. The Inuit people of Alaska have a very low salt intake, and basically do not suffer from hypertension, while the residents in the northern part of Japan, where the daily salt intake reaches about 20 grams, have a shockingly high incidence of hypertension.