AUTHOR=Wu Yingting , Cheng Qi , Song Haiyang , Gong Xinyue , Wang Sihan , Xu Kehui , Qin Lei , Cheng Jing , He Fei TITLE=The impact of social activity on cardiovascular disease risk among middle-aged and older adults in China: a nationwide cohort study based on the CHARLS database JOURNAL=Frontiers in Public Health VOLUME=Volume 13 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2025.1554130 DOI=10.3389/fpubh.2025.1554130 ISSN=2296-2565