1. Obese patients are often accompanied by hypertension, so eating more salt has a more significant impact on obese patients. Therefore, eating less salt during weight loss can not only avoid further increase of blood pressure, but also reduce body water retention to lose weight. So when you lose weight, you must eat less salt.

2. The retention of sodium is accompanied by the retention of water, which increases the blood volume, resulting in an increase in blood pressure, which makes people suffer from hypertension, aggravates the burden on the heart and promotes heart failure.

3. The main component of salt is sodium chloride. Excessive salt intake will lead to excessive sodium intake, which will make sodium stay in the body if it exceeds the scavenging capacity of the kidney.

Extended data

1. China's health care department advocates that people's diet should not be too salty, and the daily salt intake should be 6-8 grams, which reminds residents in most parts of northern China to change their salt eating habits and advocate eating more fresh vegetables and fruits. On the one hand, it can prevent low potassium, on the other hand, foods containing vitamin C can block the synthesis of nitrosamines in the stomach, which has the function of preventing cancer.

2. Although a low-salt diet is beneficial to human health, the intake of salt cannot be unlimited. The intake of sodium chloride is a necessary condition for maintaining life activities. Lack of salt in the body can cause fatigue, sweating and physiological dysfunction of many organs. Cardiovascular experts also found through a large number of clinical data that people with low salt intake can still suffer from atherosclerosis and coronary heart disease, and the incidence of myocardial infarction is not low, although their blood pressure is not necessarily high.

Resources-Baidu Encyclopedia-You need to know science to eat salt.