SCIENCE OF SALT

Partners

World Hypertension League

School of Preventative Medicine, University of Otago, New Zealand

The George Institute for Global Health, India and Australia

Canadian Institute for Health Research

Heart & Stroke Foundation of Canada

Supporter Services

PAHO/WHO Technical Advisory Group on Cardivoascular Disease Pevention through Dietary Sodium 

World Action on Salt and Health

WHO Collaborating Centre for Nutrition (United Kingdom)

Authors

Background

Nearly every country (181 of 187) in the world consumes in excess of the WHO recommended maximum salt intake of 5g per day. The high profile provided by public health efforts has resulted in a vast number of publications on dietary salt. The rapidly growing volume of research makes it challenging to stay up to date as to what is the best strategy for improving health.

Aims

To identify, summarize and appraise studies reporting on;

  1.  the relationship between dietary salt and health outcomes and
  2.  the implementation of salt reduction initiatives that were identified as part of the Science of Salt Weekly systematic review series,

with a view to assist scientists, clinicians and policy makers to stay informed about the effects of salt on health and the best strategies to lower salt intake.

Methods

  • Relevant articles are identified through an established weekly Medline literature search. The automated search strategy was adapted from an approach used to conduct Cochrane Collaboration systematic reviews for the development of WHO dietary salt recommendations.
  • Two summaries of the reviewed articles are then published approximately every 6 months in The Journal of Clinical Hypertension. The first will focus on the relationship between dietary salt and health outcomes and the second on the implementation of strategies to achieve salt reduction in populations.

Impact

  • A total of four systematic reviews on the relationship between salt and health outcomes and four on the implementation of salt reduction initiatives have been published to date.
  • The fifth systematic review on the implementation of salt reduction initiatives, focusing on salt related knowledge, attitudes and behaviours is currently being written.

Full list of publications:

Annual review

  1. The Science of salt: a systematic review of clinical salt studies 2013 to 2014 
  2. The Science of Salt: a systematic review of quality clinical salt outcome studies June 2014 to May 2015 

Thematic review

  1. The Science of Salt: A focused review on salt-related knowledge, attitudes and behaviors, and gender differences 
  2. The Science of Salt: Updating the evidence on the global estimates of salt intake

Implementation

  1. The Science of salt : a regularly updated systematic review of the implementation of salt reduction interventions (June-October 2015)
  2. The Science of salt: a regularly updated systematic review of the implementation of salt reduction interventions (November -February 2016)
  3. The Science of Salt: A regularly updated systematic review of the implementation of salt reduction interventions (March-August 2016)
  4. The Science of Salt: A regularly updated systematic review of the implementation of salt reduction interventions (September 2016-February 2017)

Health outcomes

  1. The Science of Salt: A regularly updated systematic review of salt and health outcomes (June and July 2015)
  2. The Science of Salt: A Regularly Updated Systematic Review of Salt and Health Outcomes (August to November2015)
  3. The science of salt: A regularly updated systematic review of salt and health outcomes (December 2015 to March 2016)
  4. More evidence that salt increases blood pressure and risk of kidney disease from the Science of Salt:A regularly updated systematic review of salt and health outcomes (April to July 2016) 
  5. High sodium intake increase blood pressure and risk of kidney disease. From the Science of Salt: A regularly updated systematic review of salt and health outcomes (August 2016 to March 2017)
  6. Paucity of high-quality studies reporting on salt and health outcomes from the science of salt: A regularly updated systematic review of salt and health outcomes (April 2017 to March 2018) 

Science of Salt Weekly

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