AUTHOR=Wang Zhi-Zhuang , Ma Guo-Liang , Xu Bo , Chen Xin , Yang Bo-Wen , Qin Xiao-Kuan , Duan Wei-Li , Feng Min-Shan , Yin He , Sun Kai , Zhu Li-Guo TITLE=Association between A body shape index and bone mineral density in middle-aged and elderly adults: a retrospective analysis of NHANES 2005–2018 JOURNAL=Frontiers in Endocrinology VOLUME=Volume 16 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/endocrinology/articles/10.3389/fendo.2025.1506841 DOI=10.3389/fendo.2025.1506841 ISSN=1664-2392