The Hidden Arc of Caregiver Decline: Trajectory, Reserve, and Systemic Implications

Su and Cheng's longitudinal study of Chinese caregivers [1] provides a critical corrective to static, role‐based conceptualizations of caregiver well‐being. Their data indicate that while caregivers report slightly higher life satisfaction than non‐ caregivers at age 60 (spousal caregivers: β = + 0.12, p < 0.05), declines in both life satisfaction and health‐related quality of life (HRQoL) accelerate over time. Importantly, growth‐curve analyses reveal that these declines are neither uniform nor solely attributable to caregiver type; rather, a shared trajectory of vulnerability emerges, pointing to systemic rather than categorical determinants. This pattern suggests a compression of caregiver reserve: initial psychological benefits associated with caregiving—consistent with role‐enhancement theory [2]—are progressively under-mined by cumulative physical, social, and economic strain. The data show that spousal caregivers' HRQoL declines at an average rate of 0.08 points/year, while adult‐child and multi-generational caregivers exhibit convergence by late‐life, despite differing baseline satisfaction levels. These trajectories implicate intensity and duration of caregiving, rather than role classification, as primary drivers of decline [3, 4]. Importantly, this convergence among adult‐child and multi-generational caregivers aligns with prior evidence