Specialists have begun utilizing a new metric, “intrinsic capacity,” to assess how well individuals maintain physical and mental functions as they age. This comprehensive evaluation encompasses mobility, cognition, vision, hearing, psychological state, and vitality. The World Health Organization introduced the concept in 2015, recognizing the need for a holistic approach to understanding aging. In France, tens of thousands of people are already undergoing assessments based on this new framework. The goal is to better understand and address the challenges of an aging population and promote healthier lifespans. This metric offers a detailed look past chronological age, providing insights into functional abilities. Further implementation is expected globally as awareness grows.