AUTHOR=Yang Qijiang , Wu Xiaoyun , Duan Jinlan , Chen Yiyin , Yang Tianrui TITLE=Inflammatory parameters mediates the relationship between dietary index for gut microbiota and frailty in middle-aged and older adults in the United States: findings from a large-scale population-based study JOURNAL=Frontiers in Nutrition VOLUME=Volume 12 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2025.1553467 DOI=10.3389/fnut.2025.1553467 ISSN=2296-861X