What are the effects of salt on the human body? Is edible salt harmful to humans

Seven things to open the door: "firewood, rice, oil, salt, sauce, vinegar and tea", indicating that salt is a necessity for people. The great writer of the Song Dynasty, Su Shi's poem, has "How can you forget the taste of Shao, and you will eat without salt in March".

If you don't put a little salt in the food when eating, even the delicacies of the mountains and seas are like chewing wax. Salt is not only an important condiment, but also an indispensable substance for maintaining the normal development of the human body. It regulates the balanced distribution of water in the human body, maintains osmotic pressure inside and outside cells, participates in the formation of gastric acid, promotes the secretion of digestive juices, and can increase appetite; At the same time, it also ensures the pH necessary for pepsin, maintains the balance of pH in the body, and the normal circulation of body fluids.

If you don't eat salt, you can't eat too little salt, and eating too little salt will also cause the sodium content in the body to be too low, and the phenomenon of loss of appetite, weakness of limbs, dizziness and so on; In severe cases, symptoms such as anorexia, nausea, vomiting, rapid heart rate, weak pulse, muscle spasms, blurred vision, and decreased reflexes may also occur. In ancient times, the Netherlands, Sweden and other countries stipulated that those who violated the criminal law were not allowed to eat salt for a period of time as punishment. However, eating more salt is also harmful to the human body.

The results of the scientists' research show that salt can "hydrate" the human body, that is, salt has a certain adsorption force on water, and the more salt in the human body, the water requirement will also increase accordingly, so that too much water is retained in the body, thus causing high blood pressure. Someone has investigated the eating habits of residents in the northern area of Tokyo, Japan, who eat an average of 25 grams of salt per day, and those who suffer from high blood pressure account for 30 to 40% of all residents; In other parts of the world, only 5 15 grams of salt are eaten per day, and only 8 10% suffer from high blood pressure; Eskimos living in the Arctic Circle, who eat less than 5 grams of salt a day, almost never suffer from high blood pressure.

Therefore, experts recommend that adults should not eat more than 12 grams of salt per day. Oh.

If there is less body, there is no strength, and if there is more, it is not good for the kidneys, and it is best to have 6 grams of salt a day.

Anyway, everything is about the amount of everything, but sweating a lot in the summer will bring out the salt of the body, so if you sweat a lot, you still need to add more!!

Proper daily intake of salt is not harmful to the human body, but long-term consumption of large amounts of salt is extremely harmful to the human body.

In addition to high blood pressure, scientists have also found that the incidence and mortality of stroke in people with high salt intake are higher than those with low salt intake, and salt intake is directly proportional to blood pressure. The higher the amount of instant salt, the higher the blood pressure is relatively high; The lower the amount of salt, the lower the blood pressure. A moderate reduction in salt intake not only lowers blood pressure, but also significantly reduces arteriosclerosis.

A high-salt diet can cause an increase in renal blood flow and glomerular filtration rate, increasing the burden on the glomeruli and increasing the rate of renal impairment. Too much salt can also increase the responsiveness of bronchial smooth muscle, so a high-salt diet can exacerbate the development of asthma. A moderate reduction in salt intake may improve asthma symptoms.

Salt in the diet is a major factor in determining the amount of calcium excreted, and the higher the salt intake, the greater the amount of calcium excreted in the urine. However, when the amount of calcium excreted exceeds the amount absorbed, the calcium in the bone will be lost, resulting in a decrease in bone density, and osteoporosis and even fractures are very likely to occur.