Basic Information

Faculty

• 医学部

Academic Degree

• 修士（公衆衛生学）(ハーバード大学)

Research History

• From Apr. 2024, To Present

  Keio University, Faculty of Policy Management, Assistant Professor
• From Apr. 2021, To Mar. 2024

  Kyoto University, Graduate School of Medicine, Assistant Professor
• From Apr. 2009, To Mar. 2021

  Ministry of Health, Labour and Welfare

Profile

• Profile

  慶應義塾大学総合政策学部専任講師。経済学博士、公衆衛生学修士。専門は医療経済学、社会疫学。東京大学経済学部を卒業後、厚生労働省に入省。保険局、老健局、総理大臣官邸等で12年間社会保障政策の企画立案に携わる。ハーバード大学に留学後、京都大学を経て、現職。1986年生まれ、北海道札幌市出身。

  
  

   

ID,URL

• J-Global ID

  201901014443593248

• External link

  https://web.sfc.keio.ac.jp/~koryus/

researchmap URL

• https://researchmap.jp/koryusato

Research

Research Areas

• Humanities & social sciences, Public economics, labor economics
• Life sciences, Hygiene and public health (non-laboratory)

Papers

• Gender, socioeconomic, and built environment differences in the association of participation in an incentivized walking program with physical and social activity: A prospective cohort study among older adults in Japan

  Zhen Du; Koryu Sato; Kimihiro Hino; Katsunori Kondo; Naoki Kondo

  Social Science & Medicine, Apr. 2025

  
• Increased vegetable consumption in Japan using an incentivized health communication campaign with a quiz

  Akira Kyan; Koryu Sato; Naoki Kondo

  Journal of Nutritional Science, Mar. 2025, Peer-reviewed

  
• Sedentary behavior and the combination of physical activity associated with dementia, functional disability, and mortality: A cohort study of 90471 older adults in Japan.

  Zhen Du; Koryu Sato; Taishi Tsuji; Katsunori Kondo; Naoki Kondo

  Preventive Medicine, Mar. 2024, Peer-reviewed, Corresponding author

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• Public Libraries and Functional Disability: A Cohort Study of Japanese Older Adults

  Saeko Otani; Koryu Sato; Naoki Kondo

  SSM - Population Health, Feb. 2025, Peer-reviewed, Lead author, Corresponding author

  
• Community-level social capital and subsequent health and well-being among older adults in Japan: An outcome-wide longitudinal approach.

  Sho Takeda; Maho Haseda; Koryu Sato; Koichiro Shiba; Atsushi Nakagomi; Kazushige Ide; Naoki Kondo

  Health & place, 08 Aug. 2024, Peer-reviewed

  
• Pneumococcal vaccination, but not influenza vaccination, is negatively associated with incident dementia among Japanese older adults: The JAGES 2013-2022 prospective cohort study.

  Kousuke Iwai-Saito; Koryu Sato; Masahiro Fujii; Katsunori Kondo

  Brain, behavior, and immunity, 24 Jun. 2024, Peer-reviewed

  
• Estimating the joint association of adverse childhood experiences and asthma with subsequent depressive symptoms: a marginal structural modelling approach

  Yuta Takemura; Koryu Sato; Richard Liang; Masanori Isobe; Naoki Kondo; Kosuke Inoue

  BMJ Mental Health, Jan. 2024, Peer-reviewed

  
• Does disaster-related relocation impact mental health via changes in group participation among older adults? Causal mediation analysis of a pre-post disaster study of the 2016 Kumamoto earthquake.

  Yoko Matsuoka; Maho Haseda; Mariko Kanamori; Koryu Sato; Airi Amemiya; Toshiyuki Ojima; Daisuke Takagi; Masamichi Hanazato; Naoki Kondo

  BMC public health, 11 Oct. 2023, Peer-reviewed

  
• Family pharmacy and medication adherence among older adults in Japan: A cross-sectional study of JAGES 2019.

  Motoki Tamura; Tomo Takasugi; Mieko Nakamura; Natsuyo Yanagi; Atsushi Nakagomi; Koryu Sato; Katsunori Kondo; Toshiyuki Ojima

  The journals of gerontology. Series B, Psychological sciences and social sciences, 14 Oct. 2023, Peer-reviewed

  
• Association Between the COVID-19 Pandemic and Early Childhood Development.

  Koryu Sato; Taiyo Fukai; Keiko K Fujisawa; Makiko Nakamuro

  JAMA pediatrics, 10 Jul. 2023, Peer-reviewed, Lead author, Corresponding author

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• Retirement and cardiovascular disease: a longitudinal study in 35 countries

  Koryu Sato; Haruko Noguchi; Kosuke Inoue; Ichiro Kawachi; Naoki Kondo

  International Journal of Epidemiology, 08 May 2023, Peer-reviewed, Lead author, Corresponding author

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• Machine Learning-Based Prediction of Functional Disability: a Cohort Study of Japanese Older Adults in 2013-2019.

  Yongjian Lu; Koryu Sato; Masato Nagai; Hirokazu Miyatake; Katsunori Kondo; Naoki Kondo

  Journal of general internal medicine, 01 May 2023, Peer-reviewed, Lead author, Corresponding author

  
• Association of frailty with influenza and hospitalization due to influenza among independent older adults: a longitudinal study of Japan Gerontological Evaluation Study (JAGES)

  Kousuke Iwai-Saito; Koryu Sato; Jun Aida; Katsunori Kondo

  BMC geriatrics, 26 Apr. 2023, Peer-reviewed

  
• Trends in Cardiovascular Risk Factors by Income among Japanese Adults Aged 30-49 Years from 2017-2020: A nationwide longitudinal cohort study

  Kosuke Inoue; Naoki Kondo; Koryu Sato; Shingo Fukuma

  Endocrine Practice, Jan. 2023, Peer-reviewed

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• The relationships between social participation before the COVID-19 pandemic and preventive and health-promoting behaviors during the pandemic: the JAGES 2019–2020 longitudinal study

  Miyako Kimura; Kazushige Ide; Koryu Sato; Eunji Bang; Toshiyuki Ojima; Katsunori Kondo

  Environmental Health and Preventive Medicine, 2022, Peer-reviewed

  
• Associations of influenza and pneumococcal vaccinations with burdens of older family caregivers: The Japan Gerontological Evaluation study (JAGES) cross-sectional study

  Kousuke Iwai-Saito; Koryu Sato; Katsunori Kondo

  Vaccine, Dec. 2022, Peer-reviewed

  
• Association of functional competencies with vaccination among older adults: a JAGES cross-sectional study

  Kousuke Iwai-Saito; Koryu Sato; Katsunori Kondo

  Scientific Reports, 14 Oct. 2022, Peer-reviewed

  
• A novel behavioral science-based health checkup program and subsequent metabolic risk reductions in a workplace: Checkup championship.

  Hanae Nagata; Koryu Sato; Maho Haseda; Yumiko Kobayashi; Naoki Kondo

  Preventive medicine, 21 Sep. 2022, Peer-reviewed, Lead author, Corresponding author

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• The association between elder abuse and refrainment from daily activities during the COVID-19 pandemic among older adults in Japan: A cross-sectional study from the Japan Gerontological Evaluation Study.

  Chie Koga; Taishi Tsuji; Masamichi Hanazato; Koryu Sato; Katsunori Kondo

  SSM - population health, Sep. 2022, Peer-reviewed

  
• Characteristics associated with optimistic or pessimistic perception about the probability of contracting COVID-19: A cross-sectional study of Japanese older adults

  Yuta Takemura; Koryu Sato; Katsunori Kondo; Naoki Kondo

  SSM - Population Health, Aug. 2022, Peer-reviewed, Corresponding author

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• Pre-pandemic individual- and community-level social capital and depressive symptoms during COVID-19: A longitudinal study of Japanese older adults in 2019-21

  Koryu Sato; Naoki Kondo; Katsunori Kondo

  Health & Place, Mar. 2022, Peer-reviewed, Lead author, Corresponding author

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• Nutrient and Food Group Prediction as Orchestrated by an Automated Image Recognition System in a Smartphone App (CALO mama): Validation Study

  Yuki Sasaki; Koryu Sato; Satomi Kobayashi; Keiko Asakura

  JMIR Formative Research, 10 Jan. 2022, Peer-reviewed

  
• Potential causal effect of physical activity on reducing the risk of dementia: a 6-year cohort study from the Japan Gerontological Evaluation Study.

  Koryu Sato; Naoki Kondo; Masamichi Hanazato; Taishi Tsuji; Katsunori Kondo

  The international journal of behavioral nutrition and physical activity, 29 Oct. 2021, Peer-reviewed, Lead author, Corresponding author

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• Working from home and dietary changes during the COVID-19 pandemic: A longitudinal study of health app (CALO mama) users

  Koryu Sato; Satomi Kobayashi; Mai Yamaguchi; Ryohei Sakata; Yuki Sasaki; Chiaki Murayama; Naoki Kondo

  Appetite, May 2021, Peer-reviewed, Lead author, Corresponding author

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• Changes in work and life patterns associated with depressive symptoms during the COVID-19 pandemic: an observational study of health app (CALO mama) users

  Koryu Sato; Ryohei Sakata; Chiaki Murayama; Mai Yamaguchi; Yoko Matsuoka; Naoki Kondo

  Occupational and Environmental Medicine, 22 Feb. 2021, Peer-reviewed, Lead author, Corresponding author

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• Association of pneumococcal and influenza vaccination with patient-physician communication in older adults: A nationwide cross-sectional study from the JAGES 2016

  Koryu Sato; Naoki Kondo; Chiyoe Murata; Yugo Shobugawa; Kousuke Saito; Katsunori Kondo

  Journal of Epidemiology, 2021, Peer-reviewed, Lead author, Corresponding author

  
• Postdisaster Changes in Social Capital and Mental Health: A Natural Experiment From the 2016 Kumamoto Earthquake

  Koryu Sato; Airi Amemiya; Maho Haseda; Daisuke Takagi; Mariko Kanamori; Katsunori Kondo; Naoki Kondo

  American Journal of Epidemiology, 01 Sep. 2020, Peer-reviewed, Lead author, Corresponding author

  
• Intensity of community-based programs by long-term care insurers and the likelihood of frailty: Multilevel analysis of older Japanese adults

  Koryu Sato; Takaaki Ikeda; Ryota Watanabe; Naoki Kondo; Ichiro Kawachi; Katsunori Kondo

  Social Science & Medicine, Jan. 2020, Peer-reviewed, Lead author, Corresponding author

  
• Rotating savings and credit association, its members' diversity, and higher‐level functional capacity: A 3‐year prospective study from the Japan Gerontological Evaluation Study

  Koryu Sato; Naoki Kondo; Katsunori Kondo

  Geriatrics & Gerontology International, Dec. 2019, Peer-reviewed, Lead author, Corresponding author

  
• Association between exposure to health information and mortality: Reduced mortality among women exposed to information via TV programs

  Koryu Sato; Kasisomayajula Viswanath; Hana Hayashi; Yoshiki Ishikawa; Katsunori Kondo; Kokoro Shirai; Naoki Kondo; Keisuke Nakagawa; Ichiro Kawachi

  Social Science & Medicine, Jan. 2019, Peer-reviewed, Lead author, Corresponding author

  
• Spillover benefit of improved access to healthcare on reducing worry about housing and meal affordability

  Shiho Kino; Koryu Sato; Ichiro Kawachi

  International Journal for Equity in Health, Dec. 2018, Peer-reviewed

  

Misc.

• Measuring the Quality of Neurologic Care in the US: There is Room for Improvement.

  Koryu Sato

  Neurology, 18 Jun. 2021, Invited, Lead author

  
• コロナ禍で食生活・歩数・メンタルヘルスにどのような変化があったか？―健康アプリ「カロママ」のユーザーデータ分析を中心に―

  佐藤 豪竜

  プライマリ・ケア, Apr. 2021, Invited, Lead author

  
• 医療保険制度の現状と課題

  佐藤 豪竜

  週刊社会保障, Aug. 2016, Invited, Lead author

  
• 国保改革をはじめとする持続可能な医療保険制度の構築＝医療保険制度の財政基盤の安定化、負担の公平化、医療費適正化の推進、患者申出療養の創設等＝

  佐藤 豪竜

  時の法令, Nov. 2015, Invited, Lead author

  
• 被用者保険の現状と課題

  佐藤 豪竜

  週刊社会保障, Aug. 2014, Invited, Lead author

  
• 社会保障制度の課題と方向

  佐藤 豪竜

  週刊社会保障, Aug. 2012, Invited, Lead author

  

Books and Other Publications

• Silver Opportunity : Building Integrated Services for Older Adults around Primary Health Care

  Hou, Xiaohui; Sharma, Jigyasa; Zhao, Feng, Contributor, Chapter 5. Designing Integrated Care for an Aging Population: Regulation and Governance for Healthy Aging

  World Bank, Feb. 2023

  
• 複眼で見る医療経済とイノベーション

  真野 俊樹, Contributor, 第３章 米国から見た医療経済

  千倉書房, 01 Feb. 2022

  Find Kyoto University's collection of books :

  
• 健康保険法の解釈と運用 平成29年度版

  Joint editor

  法研, Jul. 2017

  
• 持続可能な医療保険制度の構築に向けて : 平成27年改革の軌跡とポイント

  これからの医療保険制度の在り方を考える研究会, Joint editor

  第一法規, Feb. 2016

  Find Kyoto University's collection of books :

  

External funds: Kakenhi

• Study to clarify factors related to vaccine hesitancy in older adults

  Grant-in-Aid for Scientific Research (C)

  Basic Section 58010:Medical management and medical sociology-related

  Niigata University

  齋藤 孔良

  From 01 Apr. 2021, To 31 Mar. 2024, Granted

  ワクチン忌避;高齢者;知的能動性;社会的役割;老々介護;フレイル;インフルエンザ;感染症;65歳以上の高齢者;肺炎;肺炎球菌予防接種;ソーシャルキャピタル;重症化予防;新型コロナウイルス感染症;呼吸器感染症

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21K10323/
• Causal effects of physical activity on health outcomes including dementia among older adults: a proposal of a new instrumental variable

  Grant-in-Aid for Early-Career Scientists

  Basic Section 58030:Hygiene and public health-related: excluding laboratory approach

  Kyoto University

  佐藤 豪竜

  From 01 Apr. 2020, To 31 Mar. 2024, Granted

  新型コロナウイルス感染症;ソーシャルキャピタル;高齢者;身体活動;操作変数;認知症;食生活;ワクチン;かかりつけ医;歩数;在宅勤務;うつ;操作変数法

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20K18931/
• Development of an internationally comparable longitudinal database of older adults and causal inference

  Grant-in-Aid for Scientific Research (B)

  Basic Section 58030:Hygiene and public health-related: excluding laboratory approach

  Kyoto University

  佐藤 豪竜

  From 01 Apr. 2023, To 31 Mar. 2027, Granted

  高齢者の健康;引退;因果推論;ハーモナイズドデータ;国際比較

  https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23H03164/