Author: Paul

A paper by Project Researcher Hiroshi Habu and Professor Naoki Kondo was published in F1000Research on June 30, 2025. It explores the challenges of applying Pierre Bourdieu’s concept of cultural capital to public health and epidemiology. Drawing on public health, epidemiology and cultural anthropology, the authors identify five core challenges: 1. the epistemological divergence between Bourdieu’s focus on power structures and public health’s focus on health promotion; 2. the need to consider intervention-oriented cultural capital concept; 3. the need to assess cultural capital at the collective level; 4. the need for cultural capital concept that encompasses human nature beyond the social space; and 5. the unclear and inconsistent definitions of culture across research fields.

To address these challenges, the study proposes a new theoretical framework that introduces “cultural determinants of health,” “cultural well-being” and “contextual validity,” laying the groundwork for “cultural epidemiology,” a quantitative approach to evaluating culture’s role in health outcomes. These insights offer a foundation for future empirical research and policy development that integrate cultural factors into health interventions.

Click here for access to the full paper.

A research team led by Program-Specific Associate Professor Daisuke Nishioka has, for the first time, mapped the characteristics and hospitalization risk of 1,990 children on public assistance (seikatsu-hogo) across six Japanese municipalities. By linking public assistance registers with medical assistance receipt data and following recipients for one year, the study found that 4.6 % of these children were hospitalized, with younger age groups and those holding disability certificates at particularly elevated risk. It is notable that hospitalization rates varied by household composition, including single-parent families and households with both parents working, and differed significantly between municipalities, emphasizing that the financial relief provided by seikatsu-hogo alone cannot fully mitigate health risks for children living in poverty.

These findings highlight the multidimensional nature of child poverty in Japan and call for policy measures beyond economic support to address social and environmental determinants of health. The authors recommend further research incorporating more granular data on non-recipients alongside recipients to inform targeted interventions.

Click here for access to the full paper.

A study led by Associate Professor Akira Kyan of the University of the Ryukyus (formerly of Kyoto University), in collaboration with Assistant Professor Koryu Sato (Keio University, Faculty of Policy Management) and Professor Naoki Kondo (Kyoto University, Department of Social Epidemiology), found that a quiz-based incentive campaign delivered via a health app significantly increased vegetable intake among residents of a Japanese city.

As part of a long-running health communication campaign, 786 participants answered quizzes on vegetable nutrition and earned points that could be exchanged for product vouchers. Participants who completed all three quizzes consumed 10.7% more vegetables than non-participants.

Using multiple regression analysis and dietary data from the previous year (from 605 individuals), the study confirmed a statistically significant increase in vegetable consumption among frequent quiz participants.

These findings provide strong evidence that gamified, incentive-based interventions delivered through digital toolscan support improvements in dietary behavior and contribute to the prevention of noncommunicable diseases.

Article: Kyan A, Sato K, Kondo N. Increased vegetable consumption in Japan using an incentivized health communication campaign with a quiz. J Nutr Sci 2025 Apr 2; 2(14): e30.

Please click here for the full-text article.

Poverty adversely affects children’s health and social lives. Children in households receiving public assistance often have diverse health and lifestyle needs that require individualized support tailored to their specific living backgrounds. Moreover, effective support methods vary depending on each child’s circumstances.

To address this issue, a research team led by Keiko Ueno, an assistant professor in the Department of Social Epidemiology at Kyoto University Graduate School of Medicine, utilized responses from a questionnaire survey of 1,275 children. Using a machine learning technique called soft clustering, they categorized the children into small groups (segments) based on differences in their living backgrounds. The researchers then conducted interviews with professionals (including NPO staff, child psychiatrists, public health nurses, and school counselors; hereafter referred to as “experts”) to understand each segment’s lifestyle characteristics and collect opinions on suitable health and life support strategies. As a result, five distinct and expert-validated segments were identified.From the expert interviews, diverse support strategies were suggested, addressing not only physical health but also social and mental well-being. Based on these findings, the team is now developing a tailor-made support system that presents support plans matched to each segment.

This research was published online in the International Journal for Equity in Health on April 16, 2025.

Article：Ueno K, Nishioka D, Shiho K, Naoki K. A data-driven approach to detect support strategies for children living in households receiving public assistance in Japan: a mixed methods study to establish tailor-made health and welfare care. Int J Equity Health. 2025;24:103.

Please click here for the full-text article. The press release is also available here.