To prevent loneliness and social isolation in middle-aged and older adults, this study aims to introduce the community-based initiative “Community Shed.” This initiative has been selected for the project-driven track of Tohoku University’s co-creation promotion project, “SOKAP-Connect Projects.” Community Sheds are originated in Australia, into Japan and to scientifically examine its effects. As the number of older adults living alone increases and more people lose a sense of purpose in life, Community Sheds are attracting attention as places that foster social connections and promote the formation of ikigai (a sense of meaning in life). This study is grounded in the theory of the “Social Cure,” which posits that group membership enhances health and well-being.

Conventional interventions have been effective in addressing objective indicators of social isolation but have shown only limited impact in alleviating subjective feelings of loneliness, and they have insufficiently addressed the social structures that generate isolation. In Japan in particular, the isolation of older men after retirement has become a serious issue, with few opportunities available for creating new purposes in life or for seeking consultation. Community Sheds aim not merely to provide opportunities for social interaction but to focus on the quality of social connections and the construction of social identity (a sense of belonging). They are designed to offer a space for autonomous and self-directed activities through which participants can cultivate both a sense of purpose and a sense of belonging.

In collaboration with the Japan Community Shed Association and JST-RISTEX, pilot Community Sheds have been established in Japan, including “Yorou-ya” and “Dandan-ya” in Mizukami Village, Kumamoto Prefecture, and “Pokke-Kotan” in Nishi Ward, Sapporo City, where their effectiveness is being evaluated. The results so far indicate reductions in feelings of loneliness, improvements in perceived physical health and cognitive function, and an expansion of group memberships and supportive relationships. Building on these findings, this project aims to develop a sustainable, Japan-specific system to prevent unwanted isolation and loneliness.

In collaboration with companies, there is strong potential for joint demonstration projects and service development in areas such as corporate health management, community engagement, and the promotion of well-being. For example, applications may include second-career support programs for retired employees, initiatives to extend healthy life expectancy, and integration with community-based CSR activities. In this way, Community Sheds can be developed as a model that simultaneously addresses societal challenges and enhances corporate value.

• Community Shed
• Creation of Community Spaces
• Ikigai Formation
• Social Connectedness
• Social Cure Theory
• Social Identity
• Psychological Safety
• Pilot Sheds
• Loneliness
• Social Isolation
• Middle-aged
• Older Adults