It has been shown that salt restriction can lower blood pressure, where a reduction of about 1.75 g sodium per day (4.4 g sodium chloride/day) was associated with a mean reduction in systolic/diastolic blood pressure of 4.2/2.1 mmHg, respectively.
限製食鹽對個體沒有太大的意義,對整個社會有一定的意義。