Both chronological age and individual differences in aging are the two indispensable components for predicting biological age. - Tang, Qingfeng; Ding, Pengcheng; Dai, Guowei; Liu, Shiping; Zhang, Liangliang; Hu, Xiaojuan; Cui, Ji; Su, Benyue; Xu, Jiatuo; An, Hui; Peng, Yuanyuan (Computer Methods in Biomechanics & Biomedical Engineering, 2026)