1 What are the dangers of eating too much salt 1. wrinkles:

Salt plays an important role in maintaining the body's osmotic pressure, acid-base balance and water balance, and if the amount of salt intake is too much, it will increase the sodium ions in the body, leading to dehydration of the facial cells, resulting in the aging of the skin, and thus the formation of wrinkles.

2. Colds:

People who eat heavy salt are prone to colds and flu, which is due to the high concentration of salt will inhibit the activity of respiratory cells, reducing resistance to disease. At the same time, it will reduce saliva, leading to a decrease in lysozyme in the mouth, increasing the probability of infection of viruses and germs in the upper respiratory tract.

3. Obesity:

Because eating salt can increase appetite, so that the appetite will be large, the intake of energy, more than part of the conversion can not be formed, it will form fat stored in the body. In addition, too much salt intake will promote insulin secretion, increase the storage of sugar, which is converted into fat.

4. High blood pressure:

The main component of salt is sodium chloride, which will absorb water after entering the body, causing stagnation, thus increasing blood volume and blood pressure, which is easy to induce high blood pressure, and increase the risk of heart disease.

5. Cataracts:

Studies have found that if the salt content in food is too high, it increases the risk of cataracts. Cataract refers to the whitening of the lens of the eye, which may lead to blindness if left untreated.

6. Stomach cancer:

Salt enters the body will pass through the stomach, too much salt will lead to increased concentration of gastric juice, destroying the mucous membrane inside the stomach, which will induce a variety of gastric diseases, and even increase the risk of stomach cancer.

2 What are the dangers of not eating salt

People do not eat salt, eat too little salt will lead to the body's sodium content is too low, loss of appetite, weakness of the limbs, inability to concentrate, and even dizziness; in severe cases, anorexia, nausea, vomiting, heartbeat accelerated, weak pulse, muscle spasms, blurred vision, reduced reflexes and so on.

3 How salt is made

Industrially, salt is sun-dried in seawater (also known as the salt field method) or boiled in well water or salt lake water to precipitate salt crystals. The salt thus produced contains more impurities and is called coarse salt. Coarse salt is dissolved, precipitated, filtered and evaporated to produce refined salt. There are also more people who add iodine elements to supplement more salt.