What is the effect of reducing sodium intake on systolic blood pressure?
A meta-analysis of 13 prospective studies and follow-up, 3.5 to 19 years, identified that for a typical US diet in the 1990s (the control diet), a reduction in sodium intake from 3.3 to 2.4 g/d reduced systolic BP (SBP) by 2.1 mmHg (P<0.001), and further reducing sodium intake from 2.4 to 1.5 g/d yielded additional reductions of 4.6 mmHg (P<0.001).