The dementia caregiving literature is reviewed with the goals of (a) assessing the prevalence and magnitude of psychiatric and physical morbidity effects among caregivers, (b) identifying individual and contextual correlates of reported health effects and their underlying causes, and (c) examining the policy relevance of observed findings. Virtually all studies report elevated levels of depressive symptomatology among caregivers, and those using diagnostic interviews report high rates of clinical depression and anxiety. The evidence is more equivocal and generally weaker for the association between caregiving and physical morbidity, such as self-rated health, number of illnesses, symptomatology, health care utilization, preventive health behaviors, and cardiovascular functioning. Across studies, psychiatric morbidity in caregivers was linked to patient problem behaviors, income, self-rated health, perceived stress, and life satisfaction. Physical morbidity was associated with patient problem behaviors and cognitive impairment, and with caregiver depression, anxiety, and perceived social support. Possible causes of reported effects and policy implications are discussed.

Assessment of clinical significance in addition to statistical significance is needed in this research area. Specific recommendations on design, measurement, and conceptual issues are made to enhance the clinical significance of future research.

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