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The Possibility of Infants' Nutritional Improvement through Market in Urban Areas of Sub-Saharan Africa

Research Project

Project/Area Number 20K20575
Research Category

Grant-in-Aid for Challenging Research (Pioneering)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 41:Agricultural economics and rural sociology, agricultural engineering, and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Sakurai Takeshi  東京大学, 大学院農学生命科学研究科(農学部), 教授 (40343769)

Project Period (FY) 2020-07-30 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥15,990,000 (Direct Cost: ¥12,300,000、Indirect Cost: ¥3,690,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2020: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
Keywords栄養改善 / 乳児 / 栄養補助食品 / 貧血 / 市場 / 都市部 / サブサハラ・アフリカ / ガーナ / 栄養投資の適正化 / 無作為化比較試験
Outline of Research at the Start

この研究はサブサハラ・アフリカの中でも経済発展と人口集中が顕著なガーナの都市で、持続的な乳児の栄養改善を実現する方法を探ることが目的である。具体的には、母親に子どもの栄養状態(貧血かどうか)を知らせ、その結果、母親は市販の栄養補完食品を購入するなどして離乳食を改善するか、実際に子どもの栄養状態が改善するかを評価する。子どもの栄養状態に関する情報により子どもの栄養を改善する母親の行動が誘導できるなら、「市場を通じた栄養改善」が可能であることが示唆される。市場を通じた栄養改善は、栄養剤を無償で配布するような従来の栄養改善事業と比べて効率的であり、持続可能性が高いと考えられる。

Outline of Final Research Achievements

The study found through experiments in Ghana that informing mothers about their children's exact nutritional status improves their children's nutritional status. This suggests that 'improving nutrition through the market' could be feasible if current mother and child health check-ups included the assessment of children's nutritional status. However, this study also showed that information provision alone is not effective when mothers are unaware of the measures to be taken, as in the case of anemia in children. In this regard, improving mothers' nutritional knowledge, e.g. through guidance from nurses, is also necessary. Furthermore, this study showed that free distribution of nutritional supplements for a short period of time increases the demand for such products due to the mothers' learning effect. In other words, free distribution does not necessarily hinder 'improved nutrition through the market'.

Academic Significance and Societal Importance of the Research Achievements

本研究は、サブサハラ・アフリカ(SSA)において残された大きな課題である乳幼児の栄養改善について、栄養に関する適切な知識を母親に与えれば、母親の自由な選択により栄養改善は実現可能であることを見いだした。SSAの乳幼児の栄養改善に市場が機能していることを明らかにしたことに学術的意義があるだけでなく、持続可能性の乏しい栄養補助食品や補助剤の無償配布を代替する新しい施策の立案に貢献したことに大きな社会的意義がある。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (18 results)

All 2024 2023 2022 2021 2020 Other

All Int'l Joint Research (4 results) Journal Article (7 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 5 results,  Open Access: 6 results) Presentation (7 results) (of which Int'l Joint Research: 2 results)

  • [Int'l Joint Research] KN University of Science and Technology(ガーナ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] KN University of Science and Technology(ガーナ)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] KN University of Science and Technology(ガーナ)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] KN University of Science and Technology(ガーナ)

    • Related Report
      2020 Research-status Report
  • [Journal Article] Factors associated with food consumption and dietary diversity among infants aged 6?18 months in Ashanti Region, Ghana2023

    • Author(s)
      Opoku Agyemang Godwin、Attu Samuel Selorm、Annan Reginald Adjetey、Okonogi Satoru、Sakura Takeshi、Asamoah-Boakye Odeafo
    • Journal Title

      PLOS ONE

      Volume: 18 Issue: 11 Pages: 0294864-0294864

    • DOI

      10.1371/journal.pone.0294864

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Nutrient intakes and cognitive competence in the context of abstract reasoning of school-age children in the Tamale Metropolis of Ghana2022

    • Author(s)
      Annan Reginald Adjetey、Apprey Charles、Odeafo Asamoah-Boakye、Benedicta Twum-Dei、Sakurai Takeshi、Okonogi Satoru
    • Journal Title

      Nutrition and Food Science

      Volume: 53 Issue: 1 Pages: 124-137

    • DOI

      10.1108/nfs-11-2021-0343

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The Impacts of the SBCC approach and Information About Child Anemic Status on Infant Anemia: Experimental Evidence From Ghana2022

    • Author(s)
      Okonogi Satoru、Annan Reginald、Apprey Charles、Sakurai Takeshi
    • Journal Title

      Current Developments in Nutrition

      Volume: 6 Pages: 594-594

    • DOI

      10.1093/cdn/nzac060.052

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Nutrition education improves knowledge and BMI-for-age in Ghanaian school-aged children2021

    • Author(s)
      A Annan Reginald、Apprey Charles、O Agyemang Godwin、M Tuekpe Diane、Asamoah-Boakye Odeafo、Okonogi Satoru、Yamauchi Taro、Sakurai Takeshi
    • Journal Title

      African Health Sciences

      Volume: 21 Issue: 2 Pages: 927-941

    • DOI

      10.4314/ahs.v21i2.55

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Improving Infant Nutrition through the Market: Experimental Evidence in Ghana2021

    • Author(s)
      Okonogi Satoru、Annan Reginald、Sakurai Takeshi
    • Journal Title

      SSRN Electronic Journal

      Volume: -

    • DOI

      10.2139/ssrn.3771891

    • Related Report
      2021 Research-status Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Relationship between breakfast consumption, BMI status and physical fitness of Ghanaian school-aged children2020

    • Author(s)
      Annan, R. A., Sowah, S. Apprey, C., Agyapong, N. A. F., Okonogi, S., Yamauchi, T., and Sakurai, T.
    • Journal Title

      BMC Nutrition

      Volume: 6:19 Issue: 1 Pages: 1-9

    • DOI

      10.1186/s40795-020-00344-9

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Improving Infant Nutrition through the Market: Experimental Evidence in Ghana2020

    • Author(s)
      Okonogi, S., Sakurai, T., and Annan, R. A.
    • Journal Title

      Agricultural and Resource Working Paper

      Volume: 20-F-01

    • Related Report
      2020 Research-status Report
    • Open Access / Int'l Joint Research
  • [Presentation] Duration of Free Distribution and Demand for a Complementary Food: Experimental Evidence from Ghana2024

    • Author(s)
      Satoru Okonogi
    • Organizer
      開発経済学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] The Impacts of the SBCC Approach and Information About Child Anemic Status on Infant Anemia: Experimental Evidence from Ghana2022

    • Author(s)
      Okonogi Satoru、Annan Reginald、Apprey Charles、Sakurai Takeshi
    • Organizer
      2022 American Society of Nutrition annual meeting
    • Related Report
      2022 Research-status Report
  • [Presentation] The Effect of Short-run Free Distribution of the Nutrient-Rich Complementary Food Supplement (Koko Plus) on Mothers’ Purchasing Behavior: Experimental Evidence from Ghana2022

    • Author(s)
      Okonogi Satoru、Annan Reginald、Apprey Charles、Sakurai Takeshi
    • Organizer
      22nd International Congress of Nutrition
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Impact of Behaviour Change Comunication Intervention on Responsive Feeding Practices of Caregivers of Infants and Young Children, 6-23 months in Ghana2022

    • Author(s)
      Reginald Adjetey Annan、 Akosua Achiaa Akosah、Satoru Okonogi、Takeshi Sakurai
    • Organizer
      22nd International Congress of Nutrition
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] The Impacts of the SBCC approach and Information about Child Anemic Status on Infant Anemia: Experimental Evidence from Ghana2022

    • Author(s)
      Okonogi Satoru、Annan Reginald、Apprey Charles、Sakurai Takeshi
    • Organizer
      Nutrition 2022 (American Society for Nutrition)
    • Related Report
      2021 Research-status Report
  • [Presentation] Improving Infant Nutrition through the Market: Experimental Evidence in Ghana2020

    • Author(s)
      Okonogi, S., Sakurai, T., and Annan, R. A.
    • Organizer
      Summer Workshop on Economic Theory 2020
    • Related Report
      2020 Research-status Report
  • [Presentation] ガーナ都市部における小学生の食習慣・運動習慣への教育介入 ―将来の過体重・肥満の発生を予防できるだろうか―2020

    • Author(s)
      飯原成美・山内太郎・Annan Adjetey Reginald・櫻井武司
    • Organizer
      日本農業経済学会
    • Related Report
      2020 Research-status Report

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Published: 2020-08-03   Modified: 2025-01-30  

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