A key challenge lies in preventing the loss of autonomy and promoting healthy aging-a concept now widely addressed through multidimensional and multidisciplinary approaches, as evidenced by frailty models, comprehensive geriatric assessment practices, and the WHO's "intrinsic capacity" model. That said, there is a need to assess in greater detail the extent to which individual factors contribute to health trajectories and to move further by adopting a systemic approach that examines not only the relationships between variables but also their complex interactions. The aim of this study is to identify the multidimensional determinants (medical, physical, nutritional, sensory, psycho-cognitive, psychosocial, and socioeconomic) associated with the autonomy and quality of life of older adults and those who are aging.