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Does stress induce salt intake?

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journal contribution
posted on 2010-06-01, 00:00 authored by Susan TorresSusan Torres, Anne TurnerAnne Turner, Caryl NowsonCaryl Nowson
Psychological stress is a common feature of modern day societies, and contributes to the global burden of disease. It was proposed by Henry over 20 years ago that the salt intake of a society reflects the level of stress, and that stress, through its effect on increasing salt intake, is an important factor in the development of hypertension. This review evaluates the evidence from animal and human studies to determine if stress does induce a salt appetite and increase salt consumption in human subjects. Findings from animal studies suggest that stress may drive salt intake, with evidence for a potential mechanism via the sympatho-adrenal medullary system and/or the hypothalamo–pituitary–adrenal axis. In contrast, in the few laboratory studies conducted in human subjects, none has found that acute stress affects salt intake. However, one study demonstrated that life stress (chronic stress) was associated with increased consumption of snack foods, which included, but not specifically, highly salty snacks. Studies investigating the influence of chronic stress on eating behaviours are required, including consumption of salty foods. From the available evidence, we can conclude that in free-living, Na-replete individuals, consuming Na in excess of physiological requirements, stress is unlikely to be a major contributor to salt intake.

History

Journal

British journal of nutrition

Volume

103

Pagination

1562 - 1568

Location

Cambridge, England

Open access

  • Yes

ISSN

0007-1145

eISSN

1475-2662

Language

eng

Notes

Reproduced with the kind permission of the copyright owner.

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2010, The Authors