{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T09:28:00Z","timestamp":1785403680131,"version":"3.56.0"},"reference-count":39,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T00:00:00Z","timestamp":1777507200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001700","name":"Ministry of Education, Culture, Sports, Science and Technology","doi-asserted-by":"publisher","award":["22K11697"],"award-info":[{"award-number":["22K11697"]}],"id":[{"id":"10.13039\/501100001700","id-type":"DOI","asserted-by":"publisher"}]},{"award":["22K11697"],"award-info":[{"award-number":["22K11697"]}],"id":[{"id":"https:\/\/ror.org\/048rj2z13","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nutrients"],"abstract":"<jats:p>Background\/Objectives: Chronic inflammation is a fundamental biological process underlying aging and frailty. We recently demonstrated that an anti-inflammatory diet, assessed using the Dietary Inflammatory Index (DII), was associated with serum high-sensitivity C-reactive protein levels and frailty incidence among community-dwelling older adults. The present study aimed to co-produce behavior change intervention promoting an anti-inflammatory diet by participatory action research with older adults. Particularly, increasing intake of dietary fiber was targeted as it represents a nutrient with the highest anti-inflammatory potential within the DII framework. Methods: Participants were community-dwelling older adults engaged in frailty checkup activity. Six co-production workshops were conducted between May 2022 and February 2023, integrating semi-structured group work and scientific evidence. Participant satisfaction was assessed after each session. Changes in dietary behavior were evaluated using DII score and dietary intake assessed by the Brief Self-Administered Diet History Questionnaire (BDHQ). Results: A cumulative total of 66 participants was involved (mean age, 73.7 \u00b1 4.8 years; 80.0% women). When compared before and after co-production workshops, total DII scores and DII scores calculated by anti-inflammatory nutrients significantly decreased (p = 0.031 and p = 0.020, respectively). Dietary fiber intake also significantly increased following the workshop (p = 0.044). Among dietary fiber-rich food groups, mushroom consumption showed a particularly significant increase (p = 0.048). Conclusions: Co-production workshops integrating group work and scientific evidence were effective in promoting behavioral changes toward an anti-inflammatory diet among community-dwelling older adults. This developed intervention may represent a feasible and practical dietary strategy for frailty prevention in community settings.<\/jats:p>","DOI":"10.3390\/nu18091420","type":"journal-article","created":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T08:46:26Z","timestamp":1777538786000},"page":"1420","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Co-Production of Behavior Change Intervention Promoting an Anti-Inflammatory Diet for Frailty Prevention in Community-Dwelling Older Adults"],"prefix":"10.3390","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-5602-972X","authenticated-orcid":false,"given":"Weida","family":"Lyu","sequence":"first","affiliation":[{"name":"Institute of Gerontology, The University of Tokyo, Tokyo 113-8656, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Momoka","family":"Masuda","sequence":"additional","affiliation":[{"name":"Department of Human Ecology, The University of Tokyo, Tokyo 113-8654, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kozue","family":"Kubo","sequence":"additional","affiliation":[{"name":"Institute of Gerontology, The University of Tokyo, Tokyo 113-8656, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hayato","family":"Isomoto","sequence":"additional","affiliation":[{"name":"Institute of Gerontology, The University of Tokyo, Tokyo 113-8656, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuki","family":"Tamii","sequence":"additional","affiliation":[{"name":"Welfare for the Elderly in Toshima City, Tokyo 171-8422, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Youko","family":"Nakamae","sequence":"additional","affiliation":[{"name":"Welfare for the Elderly in Toshima City, Tokyo 171-8422, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuka","family":"Okitsu","sequence":"additional","affiliation":[{"name":"Welfare for the Elderly in Toshima City, Tokyo 171-8422, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Asako","family":"Arai","sequence":"additional","affiliation":[{"name":"Welfare for the Elderly in Toshima City, Tokyo 171-8422, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masako","family":"Ueno","sequence":"additional","affiliation":[{"name":"Welfare for the Elderly in Toshima City, Tokyo 171-8422, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masahiro","family":"Akishita","sequence":"additional","affiliation":[{"name":"Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo 173-0015, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1339-5681","authenticated-orcid":false,"given":"Katsuya","family":"Iijima","sequence":"additional","affiliation":[{"name":"Institute of Gerontology, The University of Tokyo, Tokyo 113-8656, Japan"},{"name":"Institute for Future Initiatives, The University of Tokyo, Tokyo 113-0033, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-2900-6871","authenticated-orcid":false,"given":"Bo-Kyung","family":"Son","sequence":"additional","affiliation":[{"name":"Institute of Gerontology, The University of Tokyo, Tokyo 113-8656, Japan"},{"name":"Institute for Future Initiatives, The University of Tokyo, Tokyo 113-0033, Japan"},{"name":"Coproduction of Inclusion, Diversity and Equity (IncluDE) Center, The University of Tokyo, Tokyo 113-8654, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,4,30]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"M146","DOI":"10.1093\/gerona\/56.3.M146","article-title":"Frailty in older adults: Evidence for a phenotype","volume":"56","author":"Fried","year":"2001","journal-title":"J. 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