Associations between metal exposure and metabolic syndrome: exploring the mediating role of biological ageing among US adults. - Zheng, Liuyan; Lu, Xinyue; Luo, Suping; Guo, Jianhui; Xu, Xingyan; Yang, Le; Chen, Mingjun; Lin, Shaowei; Xie, Xiaoxu; Li, Huangyuan; Wu, Siying (Diabetology & Metabolic Syndrome, 2025)