Why do people eat salt every day?

Salt is not only an important condiment, but also an indispensable substance to maintain the normal development of human body. Adjust the balanced distribution of water in human body, maintain osmotic pressure inside and outside cells, participate in the formation of gastric acid, promote the secretion of digestive juice, and stimulate appetite; At the same time, it also ensures the pH necessary for the action of pepsin, maintains the balance of pH in the body and the normal circulation of body fluids.

Man cannot lack salt. Once the body lacks salt, it will cause the sodium content in the body to be too low, leading to loss of appetite, weakness of limbs and dizziness. In severe cases, symptoms such as nausea, anorexia and increased heart rate may occur.

Salt intake will increase the salt concentration of blood in the body. Even without salt, water in the body will be lost and the concentration of salt will be increased, which is the result of sweating. Sweat contains salt, but the concentration is lower than blood salt. If you sweat a lot in strenuous exercise or hot weather, although you lose both water and salt, the proportion of water lost is higher than that of salt, resulting in an increase in blood salt concentration, which stimulates the pituitary gland to secrete ADH that makes you thirsty. To prevent dehydration, of course, you should drink water, and in the case of a lot of sweating, you should also add some salt taken away by sweat. Drinking salt water by yourself often makes the salt concentration too high, which is counterproductive. It is best to make the salt concentration just equal to the salt concentration of sweat.