Although there are limited means of delaying the cognitive decline in patients with dementia, aromatherapy contributes to alleviating the pain manifested through peripheral symptoms and psychological expression of dementia as part of dementia control. However, there are no studies that comprehensively verify the stress reduction effect, cognitive function, vital signs, etc. in the elderly requiring long-term care. In this study, we focused on Himekuromoji (Lindera lancea ), which grows naturally in Japan and has no verification cases and decided to verify the possibility of aromatherapy using that essential How to cite this paper: Kikukawa, H.,
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