"This week a meta-analysis of seven studies involving a total of 6,250
subjects in the American Journal of Hypertension found no strong evidence
that cutting salt intake reduces the risk for heart attacks, strokes or
death in people with normal or high blood pressure. In May European
researchers publishing in the Journal of the American Medical Association
reported that the less sodium that study subjects excreted in their urine—an
excellent measure of prior consumption—the greater their risk was of dying
from heart disease. These findings call into question the common wisdom that
excess salt is bad for you, but the evidence linking salt to heart disease
has always been tenuous."
In several studies not mentioned, subjects consumed up to 25 grams of salt
daily, for extended periods, and suffered no adverse effects. As it turns
out, about 6% of Americans suffer from hypertension and half of those have
the kind of hypertension that is aggravated by salt.
All other things being equal, that means that 97% of us can eat as much salt
as we want with no effect on the body.