Core Viewpoint - A recent study from the University of Science and Technology of China published in the journal Matter indicates that an iron-rich diet enhances the macro strength and toughness of bamboo rat tooth enamel, improving its damage resistance. This research provides new insights for the design of advanced structural materials and offers a novel approach to enhance human tooth enamel [3][6][9]. Group 1 - The study demonstrates that an iron-rich diet can significantly improve the mechanical properties of bamboo rat teeth, specifically their enamel strength and toughness [3][6]. - The research team successfully cultivated bamboo rats with iron-rich incisors and systematically studied the mechanical role of iron in tooth enamel [6][7]. - The findings suggest that the combination of compositional adjustments and graded structural advantages can synergistically enhance strength and toughness, providing new insights for advanced material design [9]. Group 2 - The study highlights the potential of dietary strategies to incorporate ions into the nanoscale structure of human tooth enamel, which could mitigate health risks associated with tooth fractures and cavities [9]. - The research indicates that the additional iron in the enamel of the bamboo rat enhances hardness, wear resistance, and damage resistance due to the aggregation of iron compounds in the intercrystalline domains [7]. - The results emphasize the importance of understanding how trace elements affect macro properties, which remains a relatively unexplored area in the field of biomaterials [5].