AUTHOR=Wang Fan , Wang Xiangyang , Wang Chaowei , Liu Hao , Xu Zhixiu , Li Dongli , Zhao Xiaowen , Zhao Jialu , Li Shaomin , Zhao Jianhua TITLE=Association between hemoglobin-to-red blood cell distribution width ratio and cognitive function in older US adults: a cross-sectional study based on the NHANES 2011–2014 JOURNAL=Frontiers in Aging Neuroscience VOLUME=Volume 17 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/aging-neuroscience/articles/10.3389/fnagi.2025.1571159 DOI=10.3389/fnagi.2025.1571159 ISSN=1663-4365