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Effect of monitoring salt concentration of home-prepared dishes and using low-sodium seasonings on sodium intake reduction

Abstract

Background/objectives

Objective methods such as the monitoring of salt concentrations in home-prepared dishes may be effective in reducing salt intake. We investigated the effect of monitoring the salt concentration of home-prepared dishes (Monitoring) on salt reduction and change in taste threshold, and the effect of the simultaneous use of low-sodium seasonings (Seasoning) to compare the effect of Monitoring with the conventional method.

Subjects/methods

We conducted a double-blind randomized controlled study using a 2 × 2 factorial design with two interventions. A total of 50 participants (40–75 years-old) were recruited among residents of Niigata Prefecture, a high sodium-consuming population in Japan, then randomly allocated to four groups. After excluding participants with incomplete urine collection, change in salt intake was evaluated using 24-hour urinary excretion as a surrogate of intake for 43 participants. Change in taste threshold was evaluated in 48 participants after excluding those with incomplete threshold measurement.

Results

The Monitoring intervention group showed a significant decrease in sodium intake (−777 mg/24 h), whereas the decrease in the Seasoning intervention group was not significant (−413 mg/24 h). Sodium intake did not statistically differ between the intervention and control groups (−1011 mg/24 h and −283 mg/24 h for Monitoring and Seasoning, respectively). The changes in taste threshold measurement were very small and did not markedly differ between groups.

Conclusions

Monitoring the salt concentration of dishes had a potentially stronger salt-reducing effect than the use of low-sodium seasonings, a conventional method. Confirmation requires additional study with a larger sample size.

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References

  1. World Cancer Research Fund/American Institute for Cancer Research Food, Nutrition, Physical Activity, and the Prevention of Cancer: A global perspective. Washington, DC: USA, American Institute for Research; 2007.

  2. World Health Organization/Foodand Agriculture Organization of the United Nations. WHO technical report series 916: Joint WHO/FAO expend report on diet, nutrition and the prevention of chronic diseases. Geneva Switzerland: World Health Organization; 2003.

  3. Takachi R, Inoue M, Shimazu T, Sasazuki S, Ishihara J, Sawada N, et al. Consumption of sodium and salted foods in relation to cancer and cardiovascular disease: the Japan Public Health Center-based Prospective Study. Am J Clin Nutr. 2010;91:456–64. https://doi.org/10.3945/ajcn.2009.28587

    Article  CAS  PubMed  Google Scholar 

  4. Ministry of Health Labour and Welfare. 2013. http://www.mhlw.go.jp/bunya/kenkou/eiyou/dl/h26-houkoku.pdf (accessed Dec 2015).

  5. Committee on Strategies to Reduce Sodium Intake, Institute of Medicine. In: Henney JE, Taylor CL, Boon CS (editors). Strategies to reduce sodium intake in the United States. Washington, DC: The National Academies Press; 2010. p. 213–34.

  6. Anderson CA, Appel LJ, Okuda N, Brown IJ, Chan Q, Zhao L, et al. Dietary sources of sodium in China, Japan, the United Kingdom, and the United States, women and men aged 40 to 59 years: the INTERMAP study. J Am Diet Assoc. 2010;110:736–45. https://doi.org/10.1016/j.jada.2010.02.007

    Article  CAS  PubMed  PubMed Central  Google Scholar 

  7. Van der Veen JE, De Graaf C, Van Dis SJ, Van Staveren WA. Determinants of salt use in cooked meals in The Netherlands: attitudes and practices of food preparers. Eur J Clin Nutr. 1999;53:388–94.

    Article  Google Scholar 

  8. Yang WG, Chen CB, Wang ZX, Liu YP, Wen XY, Zhang SF, et al. A case-control study on the relationship between salt intake and salty taste and risk of gastric cancer. World J Gastroenterol. 2011;17:2049–53. https://doi.org/10.3748/wjg.v17.i15.2049

    Article  PubMed  PubMed Central  Google Scholar 

  9. Takachi R, Ishihara J, Iwasaki M, Ishii Y, Tsugane S. Self-reported taste preference can be a proxy for daily sodium intake in middle-aged Japanese adults. J Acad Nutr Diet. 2014;114:781–7. https://doi.org/10.1016/j.jand.2013.07.043

    Article  PubMed  Google Scholar 

  10. Takashashi Y, Sasaki S, Takahashi M, Okubo S, Hayashi M, Tsugane S. A population-based dietary intervention trial in a high-risk area for stomach cancer and stroke: changes in intakes and related biomarkers. Prev Med. 2003;37:432–41.

    Article  Google Scholar 

  11. Ministry of Health, Labour and Welfare/The second term of National Health Promotion Movement in the twenty first century (Health Japan 21 the second term), Analysis and Assessment Project. Tokyo, Japan.

  12. Nakamura M, Aoki N, Yamada T, Kubo N. Feasibility and effect on blood pressure of 6-week trial of low sodium soy sauce and miso (fermented soybean paste). Circ J. 2003;67:530–4.

    Article  Google Scholar 

  13. Salt Reduction Committee of the Japanese Society of Hypertension/“Now, let’s reduce salt!” General information from Salt Reduction Committee “Tips on salt reduction and high salt foods and dishes” (Japanese). Tokyo, Japan.

  14. Tochikubo O, Uneda S, Kaneko Y, Simple portable device for sampling a whole day’s urine and its application to hypertensive outpatients. Hypertens (Dallas, TeX, USA: 1979). 1983;5:270–4.

    Article  CAS  Google Scholar 

  15. Maruyama C, Nakamori T, Nakanishi Y, Hayashida M, Fukushima S. Development and Study of Salt Taste Sensitivity Test for Evaluation of Diet Therapy. Jpn J Nutr Diet. 1988;46:211–6. https://doi.org/10.5264/eiyogakuzashi.46.211

    Article  Google Scholar 

  16. Nishimoto K, Hirota R, Egawa M, Furuta S. Clinical evaluation of taste dysfunction using a salt-impregnated taste strip. ORL J Otorhinolaryngol Relat Spec. 1996;58:258–61.

    Article  CAS  Google Scholar 

  17. Nakamura M, Kubo N, Aoki N. Reduction in Salt Intake with Low Sodium Soy Sauce and Miso (Soybean Paste) in Japanese Diet: Randomized, Placebo-controlled, Double-blind Cross-over Study. Jpn J Cardiovasc Dis Prev. 2002;37:12–18.

    Google Scholar 

  18. Michikawa T, Nishiwaki Y, Okamura T, Asakura K, Nakano M, Takebayashi T. The taste of salt measured by a simple test and blood pressure in Japanese women and men. Hypertens Res. 2009;32:399–403. https://doi.org/10.1038/hr.2009.31

    Article  PubMed  Google Scholar 

  19. Shepherd R, Farleigh CA, Land DG. Preference and sensitivity to salt taste as determinants of salt-intake. Appetite. 1984;5:187–97.

    Article  CAS  Google Scholar 

  20. Kim HJ, Paik HY, Lee SY, Shim JE, Kim YS. Salt usage behaviors are related to urinary sodium excretion in normotensive Korean adults. Asia Pac J Clin Nutr. 2007;16:122–8.

    PubMed  Google Scholar 

  21. Hashimoto T, Yagami F, Owada M, Sugawara T, Kawamura M. Salt preference according to a questionnaire vs. dietary salt intake estimated by a spot urine method in participants at a health check-up center. Intern Med. 2008;47:399–403.

    Article  Google Scholar 

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Acknowledgements

We would like to sincerely thank Ms. Tomoyo Komata for her dedication in conducting this study. The study was supported by JSPS KAKENHI (Grant Number 24500970).

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Correspondence to Junko Ishihara.

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The authors declare that they have no conflict of interest.

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Ribeka Takachi is a principal investigator.

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Nakadate, M., Ishihara, J., Iwasaki, M. et al. Effect of monitoring salt concentration of home-prepared dishes and using low-sodium seasonings on sodium intake reduction. Eur J Clin Nutr 72, 1413–1420 (2018). https://doi.org/10.1038/s41430-017-0053-2

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