No, they tried out whether reducing sodium intake beyond the ordinary low-sodium diet helps, and there wasn't statistical evidence for a difference between a lo

No, they tried out whether reducing sodium intake beyond the ordinary low-sodium diet helps, and there wasn't statistical evidence for a difference between a low-sodium diet and a extra-low-sodium diet. They did not find (or even try to find) whether a low-sodium diet helps in comparison to a normal, average diet.