Anti-stress effect of oolong tea in women loaded with vigil

作者：Kurihara, H^*; Chen, L; Zhu, BF; He, ZD; Shibata, H; Kiso, Y; Tanaka, T; Yao, XS

来源：Journal of Health Science, 2003, 49(6): 436-443.

DOI：10.1248/jhs.49.436

• oolong tea
• stress
• cortisol
• lipid peroxide

The preventive effect of oolong tea on vigil stress was investigated in 55 Chinese women. The subjects received 4 servings of tea bag daily, the tea bags in each containing 2 g dry weight of oolong tea or barley tea, or else water, for a period of one week. The results of a questionnaire indicated that ingestion of oolong tea improved symptoms of stress such as stiffness of the shoulders, fatigue of the eyes and headaches, as well as ameliorated the stress-induced increase in the number of errors in calculation tasks compared with controls. In addition, plasma cortisol levels were significantly lower in the oolong tea group (17.84 /- 2.46 mug/dl) than in the barley tea group (21.33 /- 6.47 mug/dl) or water group (22.95 /- 6.98 mug/dl). Ingestion of oolong tea significantly alleviated the vigil stress-induced increase in plasma lipid peroxide levels, which may have been related to the stress-relieving effects of caffeine or antioxidant properties of polyphenols contained in the tea. These findings suggested that oolong tea has anti-stress effect, with no adverse effects on appetite or physical fitness.

• 出版日期2003-12
• 单位福建省中医药研究院; 暨南大学