Recently, the Journal of the American Medical Association (JAMA) published an article by Stolarz-Skrzypek and colleagues. The cohort study examined 24-hour urinary sodium excretion in relationship to blood pressure, hypertension, and fatal and nonfatal outcomes and concluded low-sodium diets increased cardiovascular disease and should not be recommended on a population basis. The investigative team was strong and indicated a lack of financial conflicts of interest. So what does this mean? In this article we review briefly the evidence supporting the link between higher dietary sodium intake and cardiovascular disease and the smaller body of work purporting that this association is not true, present an abbreviated critique of the study by Stolarz-Skrzypek et al., and add this study to a growing meta-analysis demonstrating that higher sodium intake is associated with worse cardiovascular outcomes.
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