Skipping salt for a week may lead to hyponatremia, which varies from person to person. The main component of table salt is sodium chloride, and sodium ion is one of the most important cations in the human body, which is important for maintaining homeostasis. Whether or not salt is consumed, the body will excrete a certain amount of sodium ions through urine every day. Not eating salt for a week can cause hyponatremia, which can lead to headache and lethargy in mild cases, and even coma in severe cases. The severity of the symptoms is more related to the rate at which the patient’s blood sodium decreases, as well as his or her age and whether or not he or she has an underlying disease; the older the person is and the more likely he or she is to have symptoms if he or she has an underlying disease. In addition, hyponatremia usually does not occur if you simply do not eat table salt and eat condiments containing sodium ions such as soy sauce, monosodium glutamate, and soy sauce.