A new editorial by Stefano Cacciatore, MD, published in Age and Ageing, argues that intrinsic capacity and frailty should be understood as complementary frameworks rather than competing approaches to aging.
Published on May 18, 2026, the editorial, “Intrinsic capacity will not replace frailty–and should not try,” accompanies a broader discussion in the journal on the relationship between the two concepts.
Intrinsic capacity, developed within the World Health Organization healthy aging framework, focuses on the physical and mental capacities individuals can draw on throughout later life. Its longitudinal and preventive perspective may help identify early declines and support intervention before clinically significant vulnerability develops.
Frailty addresses a different clinical need. It identifies increased vulnerability, helps clinicians interpret complexity, and remains central to risk assessment, comprehensive geriatric evaluation, and decisions in individuals with more advanced health needs.
The editorial argues that treating the two concepts as alternatives risks obscuring their distinct roles. Instead, intrinsic capacity may support prevention, longitudinal monitoring, and earlier intervention, while frailty remains essential for identifying clinically relevant vulnerability and guiding complex care.
Their integration could provide health systems with a more continuous framework spanning the trajectory from resilience and early functional decline to clinically significant vulnerability.
The editorial concludes that the future of aging care does not depend on selecting a single construct, but on developing a coherent language and model of care capable of incorporating both perspectives.