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Systematic review and meta-analysis
Lower sodium intake reduces blood pressure in adults and children, but is not associated with a reduced risk of all CVD or all cause mortality
  1. Michael H Alderman,
  2. Hillel Cohen
  1. Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, New York, USA
  1. Correspondence to: Dr Michael H Alderman, Department of Epidemiology and Population Health, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461 USA; michael.alderman{at}

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More than half a century has passed since the idea that the lower blood pressure (BP) associated with lower sodium intake justifies reduced intake for all. Authoritative bodies have subsequently endorsed this view with increasingly ambitious reduction goals. The US Department of Agriculture and US Department of Health and Human Services currently recommend <1.5 g sodium/day for virtually half the population, with <2.3 g1 levels for the remainder. While in much of the world, including the UK and the USA, mean sodium intake approximates 3.5 g/day.2 However, emerging evidence has led to increased uncertainty that, despite BP effects, there is insufficient evidence to support these recommendations.3


Aburto and colleagues have updated their previous meta-analysis of the relationship between sodium intake and BP with morbidity and mortality outcomes. An analysis of 36 trials …

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  • Competing interests None.