Please write a piece about your experience about salt, about 400 words

Salt. 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.

Salt is an indispensable seasoning in daily life, and it is also the main sodium and chloride ion in the human body, which plays an important role in maintaining human life activities. Modern medical research has shown that if too much salt is consumed, it can enhance amylase activity, thereby promoting starch digestion and free glucose absorption in the small intestine, which can cause blood sugar concentration to increase and lead to aggravation of the disease. Hypertension is a risk factor for coronary heart disease, most diabetic patients are accompanied by hypertension and obesity, eating more salt will increase blood pressure, which is not conducive to the prevention and treatment of hypertension, so salt must be limited.

Diabetic patients should have a light diet and should have a low-salt diet under scientific guidance. Human life and health are inseparable from salt, but eating too much salt will bring negative effects. For an adult, eating 5 grams of salt a day is enough to meet the body's needs.

Medical experts at home and abroad believe that eating too much salt for a long time is an important cause of hypertension after many investigations and experiments. For example, Eskimos living in the Arctic eat less than 4 grams of salt a day, and no hypertension has been found among them.

In northern Japan, residents eat as much as 26 grams of salt per day, and the incidence of hypertension is 40%; People in other regions eat 10 to 15 grams of salt per day, and the incidence of hypertension is 8% to 10%. According to reports, Gliberman of the United States counted the results of surveys in 27 countries and proved that salt intake is directly proportional to the diastolic blood pressure of blood pressure. According to a survey of 4.5 million people over the age of 15 in 29 provinces, municipalities and autonomous regions, the prevalence rate in northern China is higher than that in southern China.

In some places in rural areas in the north, the daily salt consumption per person is 18 20 grams, indicating that there is a close relationship between salt consumption and high blood pressure.