AUTHOR=Feng Xiaoling , Peng Jie , Cao Xiaoying , Lai Lichong , Huang Dongmei , Tao Pinyue , Pan Xiao , Pan Qini , Fan Dejing , Lu Shuyu , Li Caili , Pan Yanfei , Dong Pengxin , Wu Haichen , Chai Yidan , Huang Ping , Huang Huiqiao TITLE=Number of chronic diseases and cognitive function among the elderly in China: a moderated mediation model JOURNAL=Frontiers in Psychology VOLUME=16 YEAR=2025 URL=https://www.frontiersin.org/journals/psychology/articles/10.3389/fpsyg.2025.1491382 DOI=10.3389/fpsyg.2025.1491382 ISSN=1664-1078