Psychological Frailty in Later Life: A Critical Narrative Review of Integrative Interventions and the Proposed RESERVE-7 Heuristic

Abstract

Background: Psychological frailty may describe reduced capacity to adapt to stress in later life, but definitions vary and its added clinical value is unknown. Methods: We conducted a critical narrative review of MEDLINE via PubMed (1 January 2015 to 29 August 2026), citation chains, and selected guidance. The original core query returned 114 records; the focused reconciliation added construct-specific reports. Forty-nine sources inform this synthesis. Results: Trials have measured psychological-frailty domains, and D-SCOPE permitted a psychological-domain threshold as one of several enrollment routes. Freitag and Schmidt reported small short-term improvements in frailty and mental health; D-SCOPE reported no significant six-month within-group change in psychological frailty; and MIND-STEP reported a psychological-frailty risk difference of −13.87 percentage points at 12 weeks (95% CI −25.04 to −2.69). These measures are not interchangeable with our proposed affective–adaptive definition. We found no trial that exclusively recruited participants using a validated version of that proposed construct. Adjacent evidence concerns defined symptoms and functional outcomes. We propose RESERVE-7 as an unvalidated heuristic for identifying goals, reversible drivers, an initial feasible intervention, treatment burden, and follow-up. Conclusions: Construct-specific intervention findings deserve explicit consideration, but they do not validate psychological reserve or RESERVE-7. Prospective validation is needed before adoption.

The authors' abstract, as published at the source. Healthcare, 2026 · DOI ↗