AUTHOR=Zhang Jingyuan , Guo Jun , Zhang Jing , Liu Heng , Zhou Lin , Cheng Chi , Cao Hong TITLE=The mediating role of biological age in the association between dietary index for gut microbiota and sarcopenia JOURNAL=Frontiers in Immunology VOLUME=16 YEAR=2025 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2025.1552525 DOI=10.3389/fimmu.2025.1552525 ISSN=1664-3224