Figure 5.

Changes in systolic blood pressure (SBP) in normotensive subjects induced by changing salt intake from 50 mmol/day to 150 mmol/day, or from 100 mmol/day to 150 mmol/day for 30 days. Note that a salt intake of 100 mmol/day is the maximum recommended in most guidelines. The results show the mean changes and 95% confidence intervals. *The salt-induced increase in blood pressure is significantly greater in the black group. Results are from the analysis of Bray et al. (20) of the control diet arm of the DASH-Sodium trial in which potassium intake was targeted to be 44 mmol/day.