Longitudinal impact of transition to caregiving on cognitive functioning: a matched case-control study

Area of Science:

• Neuroscience and Aging
• Psychology of Stress and Cognition

Background:

• Chronic stress, particularly from caregiving, is theoretically linked to cognitive decline in aging.
• Previous studies on caregiving and cognition have methodological limitations.
• Dementia caregiving stress is a significant concern for cognitive health.

Purpose of the Study:

• To longitudinally examine the impact of caregiving transitions on cognitive aging.
• To compare cognitive changes in caregivers versus matched non-caregivers.
• To investigate the mediating roles of depressive symptoms and perceived stress.

Main Methods:

• Compared 251 individuals transitioning into caregiving with 251 matched non-caregivers.
• Utilized 14 years of repeated assessments of global cognition, episodic memory, and verbal fluency.
• Analyzed data from before and after caregiving transitions.

Main Results:

• Caregiving transitions showed small, temporary negative associations with episodic memory and global cognition.
• Transitioned caregivers exhibited less decline in word list learning and global cognition post-transition compared to non-caregivers.
• Dementia caregivers showed worse delayed word recall but better animal fluency post-transition; depressive symptoms mediated memory decline.

Conclusions:

• Caregiving transitions have domain-specific and short-lived effects on cognition.
• Dementia caregiving has distinct impacts on specific cognitive functions.
• Further research is needed to explore interventions for temporary cognitive declines in caregivers.