Household low-sodium edible salt is the best. The content of sodium chloride in common edible salt is above 95%. Long-term use of this edible salt will increase vascular tension, blood flow and blood pressure, while the content of sodium chloride in low sodium salt is 60% to 80%. Low sodium ion content can prevent and treat hypertension and heart disease. Low sodium salt is a healthy salt. On the basis of iodized salt, a certain amount of potassium chloride (about 30%) is added. Therefore, low sodium salt is suitable for middle-aged and elderly people and hypertensive patients to eat for a long time, which can help people balance sodium and potassium and prevent cardiovascular and cerebrovascular diseases. But if you are a heart patient, it is not recommended to eat low sodium salt. Low sodium salt contains high potassium content, which is easy to increase the burden on the heart, thus aggravating the condition.