Survey on the value of salt reduction among young people and school cafeteria intervention experiment to deter prehypertension by applying experimental social science

• Project/Area Number: 18K09942
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 58010:Medical management and medical sociology-related
• Research Institution: Shimane University
• Principal Investigator: Akai Kenju 島根大学, 学術研究院医学・看護学系, 講師 (20583214)
• Co-Investigator(Kenkyū-buntansha): 木島 庸貴 島根大学, 学術研究院医学・看護学系, 講師 (10727233) ; 並河 徹 島根大学, 学術研究院医学・看護学系, 特任教授 (50180534) ; 青木 恵子 九州大学, エネルギー研究教育機構, 准教授 (10546732)
• Project Period (FY): 2018-04-01 – 2023-03-31
• Project Status: Completed (Fiscal Year 2022)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
• Keywords: 高血圧 / 減塩 / サーベイ

Outline of Final Research Achievements

Positive information about the health benefits of salt reduction was found to increase the value of salt reduction more than negative information. The effect was also found to be particularly strong among younger people. Publication of information on hypertension and health was shown to significantly increase awareness in the non-hypertensive group. In addition, the Izumo Sensory and Behavioral Economy Laboratory was established to conduct dietary behavior research, and a low-sodium menu was developed and tasted by faculty and staff for evaluation. Although the image of salt is not negative in the Japanese diet, but rather considered an added value, it was found that the more conscious people were, the more negatively they perceived salt. Statistically, however, there was no difference in the impact of positive and negative information.

Academic Significance and Societal Importance of the Research Achievements

減塩価値は強制的な介入や制御ではなく、塩分摂取と高血圧およびそれによる疾病に関する簡単な情報公開で上げることができ、その水準は高血圧患者と同レベルになることがわかった。これは医師が薬や治療で強制的に介入するよりも丁寧な説明を行うことで、患者の費用負担をなくして、高血圧予防につながることが期待され、高血圧予防のための社会的費用の減少につながることが期待される。

Research Products

• [Journal Article] An association analysis between hypertension, dementia, and depression and the phases of pre-sarcopenia to sarcopenia: A cross-sectional analysis (2021)
  • Author(s): Endo, T., Akai, K., Kijima, T., Kitahara, S., Abe, T., Takeda, M., ... & Isomura, M.
  • Journal Title: PloS one Volume: 16 Issue: 7 Pages: e0252784-e0252784
  • DOI: 10.1371/journal.pone.0252784
  • Peer Reviewed / Open Access
• [Journal Article] 行動経済学の視点を医療に活かす 健康につながる行動そっと後押しする仕組み (2021)
  • Author(s): 赤井研樹
  • Journal Title: 島根保険医協会報 Volume: 第564号 Pages: 12-17
• [Journal Article] Continuous Efforts Leads to a Value for Hypertensive Patients: Development of a Casual Smart Na/K Meter and Smart Na/K Application Linked by NFC to Android (2020)
  • Author(s): Akai, K., Hirotomi, T., Mishima, A., Aoki, K., Kijima, T., & Nabika, T.
  • Journal Title: International Journal of Automation Technology Volume: 14 Issue: 5 Pages: 791-799
  • DOI: 10.20965/ijat.2020.p0791
  • NAID: 130007897182
  • ISSN: 1881-7629, 1883-8022
  • Year and Date: 2020-09-05
• [Journal Article] Effect of geographic accessibility to primary care on treatment status of hypertension (2019)
  • Author(s): Okuyama Kenta、Akai Kenju、Kijima Tsunetaka、Abe Takafumi、Isomura Minoru、Nabika Toru
  • Journal Title: PLOS ONE Volume: 14 Issue: 3 Pages: 0213098-0213098
  • DOI: 10.1371/journal.pone.0213098
  • NAID: 120006864719
  • Peer Reviewed
• [Journal Article] Height loss but not body composition is related to low back pain in community-dwelling elderlies: Shimane CoHRE study (2019)
  • Author(s): Endo Takeshi、Abe Takafumi、Akai Kenju、Kijima Tsunetaka、Takeda Miwako、Yamasaki Masayuki、Isomura Minoru、Nabika Toru、Yano Shozo
  • Journal Title: BMC Musculoskeletal Disorders Volume: 20 Issue: 1 Pages: 207-207
  • DOI: 10.1186/s12891-019-2580-6
  • Peer Reviewed / Open Access
• [Presentation] Framing Effect of Willingness to Pay for Salt Reduction in Hypertensive Patients (2021)
  • Author(s): Akai, K.*, Aoki K., Kijima, T., Yamasaki, M., Yano, S., Isomura, M., Nabika, T.
  • Organizer: Virtual ISPOR 2021
  • Int'l Joint Research
• [Presentation] Framing Effect of Salt Reduction for Hypertension Prevention: A Discrete Choice Experiment, (2020)
  • Author(s): K. Akai, K. Aoki, T. Kijima, S. Yano, M. Yamazaki, M. Isomura, T. Nabika
  • Organizer: 34th EFFoST International Conference
  • Int'l Joint Research
• [Presentation] University school cafeteria experiment of buying low-salt meals cooked with seaweed salt in Japan. (2019)
  • Author(s): Akai, K., K. Aoki, K. Ujiie, Isomura, M., & Nabika, T.
  • Organizer: Pangborn 2019.
  • Int'l Joint Research
• [Presentation] 減塩促進のための尿中ナトカリ計連動ウェアラブルデバイス用アプリ開発 (2019)
  • Author(s): 赤井研樹, 廣冨哲也, 三島あおい, 並河徹
  • Organizer: 第42回日本高血圧学会総会
• [Presentation] ナトリウム・カリウム計を用いた大学生の減塩誘発実験 (2019)
  • Author(s): 赤井研樹, 木島庸孝, 並河徹, 磯村実, 山崎雅之, 武田美和子, 青木恵子
  • Organizer: 第8回臨床高血圧フォーラム, 久留米, 2019年5月11日.
• [Presentation] English (2018)
  • Author(s): Food neophobia: School cafeteria experiment for choosing special rice
  • Organizer: EuroSense
  • Int'l Joint Research
• [Book] School Cafeteria Experiments for Food Healthy Messages, Service Engineering for Gastronomic Sciences (2020)
  • Author(s): Kenju Akai (Takeshi Shimmura, Tomomi Nonaka and Satomi Kunieda (Eds.))
  • Publisher: Springer Singapore.
  • ISBN: 9789811553202
• [Remarks] 「行動経済学を用いた疫病時代の過ごし方」, 北方民族大学（寧夏自治区銀川市）
  • URL: https://www.shimane-u.ac.jp/docs/2022121900029/
• [Remarks] 行動経済学を医学に生かす「出雲感覚・行動経済実験室」が完成しました
  • URL: https://www.med.shimane-u.ac.jp/docs/2020092300039/
• [Remarks] 【情報提供】「出雲感覚・行動経済実験室」に関する記事が山陰中央新報（8/27）に掲載
  • URL: https://www.cohre.shimane-u.ac.jp/docs/2020090100013/
• [Remarks] 【情報提供】「出雲感覚・行動経済実験室」に関する記事が山陰中央新報（8/20）に掲載
  • URL: https://www.cohre.shimane-u.ac.jp/docs/2020082500012/