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ISSN: 2471-9846
Journal of Community & Public Health Nursing

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Salt Consumption: Reflections on Public Health

Belgüzar Kara*

Department of Internal Medicine Nursing, School of Nursing, Gulhane Military Medical Academy, Ankara, Turkey

*Corresponding Author:
Belguzar Kara
Associate Professor, Department of Internal Medicine Nursing
School of Nursing, Gulhane Military Medical Academy, Ankara, Turkey
Tel: 90 312 3041565
E-mail: [email protected]

Received date: December 05, 2015 Accepted date: December 12, 2015 Published date: January 05, 2016

Citation: Kara B (2016) Salt Consumption: Reflections on Public Health. J Comm Pub Health Nursing 2:e112. doi:10.4172/2471-9846.1000e112

Copyright: © 2016 Kara B. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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The ancestors of humans ate a diet that contained less than 0.5 g of salt per day (equivalent to 0.2 g sodium/day) during million years of evolution. The human body is therefore genetically programed to this amount of salt [1]. Currently, mean daily salt intake levels are 7-13 g, varying by region and population group [2]. Studies have also reported higher rates in several Asian countries [3], as well as in Turkey [4]. However, the human body cannot evolve quickly enough to adapt to this change [1]. As a result, nowadays, a high-salt diet may lead to many non-communicable diseases, including cardiovascular disease, hypertension, stroke, stomach cancer, kidney disease, asthma and osteoporosis. As reported by the World Health Organization (WHO), non-communicable diseases are the leading cause of morbidity and mortality globally [5,6]. Additionally, high salt intake has been linked to obesity due to consumption of calorie containing beverages caused by thirst [7].

On the other hand, recent studies indicate that eating too much salt may also cause chronic inflammation and autoimmune diseases. In an experimental, longitudinal study in healthy individuals, Yi et al. [8] investigated the relationships between salt-intake level (12, 9, and 6 g/day) and the immune system. Interestingly, their findings have shown that there was a strong positive association between high-salt diet and number of monocyte. The decrease in salt consumed has also contributed to diminished production of pro-inflammatory cytokines. The researchers pointed out that high-salt diet may cause excessive immune response [8]. In accordance to these findings, Hucke et al. [9] found that high dietary salt intake promotes the central nervous system autoimmunity accompanied by increased macrophage responses. In the same study, it was noted that increased dietary salt intake may influence multiple sclerosis disease activity by affecting myeloid cell activation [9].

Consequently, there is substantial evidence in favor of salt reduction in the general population. According to a new guideline issued by the World Health Organization [5], adults should consume less than 2 g of sodium per day (equivalent to 5 g salt/day). Basically, while the main source of salt in developed countries comes from salt added to processed foods (outside of the direct control of individual), the main source in developing countries is salt added to food during cooking or at the table [7]. An online cohort study conducted in 6,987 adults from Germany, Austria, the United States, Hungary, India, China, South Africa, and Brazil suggested that the participants generally thought that reducing salt intake is healthy and important. However, about one third (34%) of the participants were not interested in salt consumption reduction and the majority were unaware of recommended salt intake levels [2]. Newson et al. [2] stated that “while some aspects of salt reduction can be globally implemented, local tailoring is required to match level of interest in salt reduction” (p. 22). In this context, a mix of individualand population-based approaches has been identified as the most cost-effective strategy for reducing salt-intake, both developed and developing countries [6,7,10]. The use of self-monitoring devices may be an effective motivational tool for salt restriction [11]. It is anticipated that future studies will provide important evidence regarding the effects of salt and barriers to change in salt consumption.


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