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Salt and high blood pressure: any more questions? Volume 31, issue 6, November-December 2019

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Hôpital Lariboisière, Institut des vaisseaux et du sang, 2, rue Ambroise Paré, 75010 Paris, France
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All learned societies agree to recommend a reduction of salt intake in patients with high blood pressure or with heart failure. In the general healthy population several studies have demonstrated a deleterious effect of too low salt intake. In a cohort of 322,624 healthy subjects followed for seven years, Welsh et al. confirmed the linear relationship between the 24-hour sodium excretion levels and the mean arterial pressure. However, they did not found any relationship between sodium excretion and cardiovascular risk, fatal or not, or between sodium excretion and the risk of all causes death in these healthy subjects with low cardiovascular risk at baseline. In the current state of knowledge, it seems reasonable to continue to disseminate and respect the recommendations of limitation of sodium intake in the diet of the general population. It should forcing manufacturers to put less salt in their processed foods – this is starting to be efficient – and persuading citizens to prepare their own meals and to consume less industrial food.

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