Soothing effect of plant fragrance on premenstrual syndrome evaluated by heart rate fluctuation

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A majority of reproductive-aged women experience a constellation of various psychophysiological symptoms in the premenstrual phase, commonly known as premenstrual syndrome(PMS). The Japanese have widely used aromatherapy, a holistic mind and body treatment, especially among women. The present study investigated the soothing effects of aromatherapy on PMS from the perspective of heart rate fluctuation, which reflects autonomic nervous system function, a mind-body interaction. This study used two different plant fragrances as aroma stimulation : lavender, as a representative of relaxing essential oils, and yuzu, a popular Japanese citrus fruit aroma oil. The study indicated that only a 10-min aroma treatment with lavender or yuzu during the premenstrual phase decreases heart rates and sympathetic nervous system activity and increases parasympathetic nervous system activity. The psychological efficacy of aroma treatments did not differ between lavender and yuzu.