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Article History

Received: 22 December 2025

Accepted: 15 April 2026

First Online: 26 May 2026

Declarations

:

: The rice used in this study was provided free of charge by Forica Foods Co. **. The funders had no role in the study design, data collection, analysis, interpretation of the results, or preparation of the manuscript. The authors declare no competing financial interests related to this study. **Folica Foods Co. (Niigata, Japan). Business = Medical treatment food, nursing care food, emergency food, canned meat products, and processed meat products (retort pouch). Manufacture and sale of canned meat, nursing food, emergency food, canned meat, processed meat products (retort pouches), and prepared foods. Head Office: 286 Horinouchi, Uonuma City, Niigata Prefecture. Telephone number =  + 81 25-794-2211.

: The study was conducted in accordance with the Declaration of Helsinki and approved by the Institutional Review Board of Keio University Hospital (approval number: 20190293; date of approval: 18 September 2020).

: Written informed consent was obtained from all participants. The study was registered in a public trial registry (UMIN-CTR, number: UMIN000041832).