Dietary salt intake and discretionary salt use in two general population samples in Australia: 2011 and 2014

Journal article


Nowson, Carol, Lim, Karen, Grimes, Carley A., O'Halloran, Siobhan, Land, Mary A., Webster, Jacqui, Shaw, J. E., Chalmers, John, Smith, Wayne, Flood, Victoria, Woodward, Mark and Neal, Bruce. (2015) Dietary salt intake and discretionary salt use in two general population samples in Australia: 2011 and 2014. Nutrients. 7(12), pp. 10501 - 10512. https://doi.org/10.3390/nu7125545
AuthorsNowson, Carol, Lim, Karen, Grimes, Carley A., O'Halloran, Siobhan, Land, Mary A., Webster, Jacqui, Shaw, J. E., Chalmers, John, Smith, Wayne, Flood, Victoria, Woodward, Mark and Neal, Bruce
Abstract

The limited Australian measures to reduce population sodium intake through national initiatives targeting sodium in the food supply have not been evaluated. The aim was, thus, to assess if there has been a change in salt intake and discretionary salt use between 2011 and 2014 in the state of Victoria, Australia. Adults drawn from a population sample provided 24 h urine collections and reported discretionary salt use in 2011 and 2014. The final sample included 307 subjects who participated in both surveys, 291 who participated in 2011 only, and 135 subjects who participated in 2014 only. Analysis included adjustment for age, gender, metropolitan area, weekend collection and participation in both surveys, where appropriate. In 2011, 598 participants: 53% female, age 57.1(12.0)(SD) years and in 2014, 442 participants: 53% female, age 61.2(10.7) years provided valid urine collections, with no difference in the mean urinary salt excretion between 2011: 7.9 (7.6, 8.2) (95% CI) g/salt/day and 2014: 7.8 (7.5, 8.1) g/salt/day (p = 0.589), and no difference in discretionary salt use: 35% (2011) and 36% (2014) reported adding salt sometimes or often/always at the table (p = 0.76). Those that sometimes or often/always added salt at the table and when cooking had 0.7 (0.7, 0.8) g/salt/day (p = 0.0016) higher salt excretion. There is no indication over this 3-year period that national salt reduction initiatives targeting the food supply have resulted in a population reduction in salt intake. More concerted efforts are required to reduce the salt content of manufactured foods, together with a consumer education campaign targeting the use of discretionary salt.

Year2015
JournalNutrients
Journal citation7 (12), pp. 10501 - 10512
PublisherMDPI AG
ISSN2072-6643
Digital Object Identifier (DOI)https://doi.org/10.3390/nu7125545
Scopus EID2-s2.0-84949978829
Open accessOpen access
Page range10501 - 10512
Research GroupMary MacKillop Institute for Health Research
Publisher's version
License
Place of publicationSwitzerland
EditorsJonathan
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