Analysis
← vista completaPublished on February 1, 2012 | http://doi.org/10.5867/medwave.2012.02.5304
Is there evidence showing that salt intake reduction reduces cardiovascular morbidity and mortality risk?
¿Está comprobado que la reducción de la ingesta de sal reduce la morbimortalidad por riesgo cardiovascular?
Abstract
A recent systematic review of Cochrane collaboration about the effect of reducing dietary salt concluded that “there is still insufficient power to exclude clinically important effects of reduced dietary salt on mortality or cardiovascular morbidity in normotensive or hypertensive populations”. This conclusion has generated an important debate, because the estimation that salt reduction can prevent 24% of strokes and 18% of myocardial infarctions has decided the health authorities of several nations to implement salt consumption reduction programs. The review of ecological studies and clinical trials allow to conclude that a reduction in salt consumption reduces blood pressure and methodological well conducted cohort studies has shown that cardiovascular events risk decreases progressively with lower levels of blood pressure. Combining this two finding we can assume that population should benefice from a decrease on salt consumption although there are no studies that shown a reduction in cardiovascular events in population with high sodium intake when dietary salt is reduced.
