Aim: Caregiver burden in dementia is an important issue, but few studies have examined the mental health of younger and older family caregivers by comparing them with age- and gender-matched community residents. We aimed to compare the mental health of dementia caregivers with that of community residents and to clarify factors related to mental health problems in younger and older caregivers.; Methods: We studied 104 dementia caregivers; 46 were younger (<65 years) and 58 were older (≥65 years).