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The one small trial published is insufficient evidence for the efficacy of aroma therapy for dementia

Holt FE, Birks TPH, Thorgrimsen LM, Spector AE, Wiles A, Orrell M
Published Online: 
January 21, 2009

Aroma therapy is the use of pure essential oils from fragrant plants (such as Peppermint, Sweet Marjoram, and Rose) to help relieve health problems and improve the quality of life in general. The healing properties of aroma therapy are claimed to include promotion of relaxation and sleep, relief of pain, and reduction of depressive symptoms. Hence, aroma therapy has been used to reduce disturbed behaviour, to promote sleep and to stimulate motivational behaviour of people with dementia. Of the four randomized controlled trials found only one had useable data. The analysis of this one small trial showed a significant effect in favour of aroma therapy on measures of agitation and neuropsychiatric symptoms. More large-scale randomized controlled trials are needed before firm conclusions can be reached about the effectiveness of aroma therapy.

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