Keio University · Social Sciences
Professor Shohei Okamoto's research lab focuses on the intersection of health, aging, and socioeconomic factors, with a particular emphasis on cognitive aging, financial literacy, and health disparities across the lifespan. The lab investigates how education, occupation, income, and social determinants influence cognitive functioning, health behaviors, and decision-making in older adults, especially in the Japanese context. A key focus is on promoting healthy aging through policy-relevant insights on financial literacy, vaccine acceptance, and employment beyond retirement. The lab also examines intergenerational socioeconomic influences on adolescent health and well-being.
Figures are computed from collected data and may differ slightly.
This empirical study suggested that gender differences in cognitive functioning and decline account for different individual attributes of social determinants among men and women. Particularly, men seem to be more engaged in activities which accumulate intellectual experiences through education and occupation, as suggested by the cognitive reserve hypothesis.
Financial literacy increases until about one's early 60s, after which it declines, while confidence in financial literacy reflects the inverse trend, especially among men. Additionally, men are more financially literate than women; however, these differences could be mitigated through education. Meanwhile, financial behaviour and attitudes among men are less premeditated. Thus, policies are needed that can help older adults with their financial decision-making, enhance women's financial literacy
Our study found that being in employment past the current age of retirement had a positive impact on health.
With a major concern about vaccine safety and side effects, interventions to mitigate against these may help to reduce vaccine hesitancy. Moreover, when citizens are imposed with restrictions, vaccine passports that increase their freedom may be helpful to increase vaccination rates.
This study suggests that cognitive decline among the elderly Japanese population is associated with socioeconomic factors, such as income and education, even after taking survival effects into account.
There is no consensus on which parental socioeconomic indicators should be used to define adolescents' socioeconomic status (SES). Utilising the data for 3154 parent-adolescent pairs obtained from the sample of the Survey of Lifestyle Value of Parents and Children 2011 conducted by the Cabinet Office in Japan, the associations between adolescent's subjective economic status, parental SES (i.e. education, occupation, and household income), and child health-related outcomes (i.e. self-rated health
Abstract The two important elements of universal health coverage—(1) enabling everyone to access the necessary health services and (2) providing financial protection from catastrophic health spending—are vital for not only healthcare but also long-term care in the context of population ageing. In this review, we provide an overview of the public long-term care system in Japan to help other countries that are experiencing (or are expected to experience) problems associated with population ageing.
Our findings potentially suggest that the association between social relationship and cognitive functioning reported in previous studies was biased, due to endogeneity. Although we did not observe causal impacts, this does not necessarily mean that social isolation does not have a negative impact on health, as both positive and negative consequences of social relationships may exist. Further research is needed to reveal the causal relationship, as well as the detailed mechanisms of health effect
Abstract The prolonged uncertainty of the COVID-19 pandemic, fear and anxiety regarding infections, precautionary social isolation, and the resulting economic disruption could deteriorate psychological health and exacerbate the suicidal risk. Utilizing month-level suicide records covering the entire Japanese population (126 million) in 1,861 administrative units, we assessed if suicide mortality changed during the pandemic. We employed difference-in-difference estimation and found that overall s
As longevity occurs, people encounter various risks associated with ageing, including economic uncertainty and health issues. Therefore, in addition to extending healthy life expectancy, it is crucial to create an environment where older people can live better even when their intrinsic capacity declines. Additionally, integrated and comprehensive care for older adults is needed to maintain their functional ability and well-being at higher levels. This review provides an overview of the systems a
This study aims to estimate the potential economic benefits of healthy ageing by obtaining estimates of the economic losses generated by functional limitations among middle-aged and older people. Utilising two data sources retrieved from nationally representative samples of the Japanese people, we analysed the association between functional limitation and economic indicators, including labour market outcomes, savings, investment, consumption, and unpaid activities among individuals aged ≥ 60. Us
Enhancement in personal quality of life owing to increased leisure time and stress reduction from work in addition to lifestyle changes may be key to understanding the health benefits of retirement. Considering the mechanisms behind retirement-health relationships and potential heterogeneous effects is essential for healthy postretirement lives when increasing the retirement age.
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