Green Tea Consumption Affects Cognitive Dysfunction in the Elderly: A Pilot Study

Nutrients

Kazuki Ide²  Hiroshi Yamada²  Norikata Takuma³  Mijong Park²  Noriko Wakamiya²  Junpei Nakase¹  Yuuichi Ukawa¹ 

[1] Central Research Institute, ITO EN, Ltd., 21 Mekami, Makinohara, Shizuoka 421-0516, Japan; E-Mails:;Department of Drug Evaluation and Informatics, Graduate School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan; E-Mails:;White Cross Nursing Home, 2-26-1 Suwa-cho, Higashimurayama, Tokyo 189-0021, Japan; E-Mail:

关键词: green tea;    oral administration;    cognitive function;    elderly;   

DOI  :  10.3390/nu6104032

来源: mdpi

【 摘 要 】

Green tea is known to have various health benefits for humans. However, the effect of green tea consumption on cognitive dysfunction remains to be clinically verified. We conducted a clinical study to investigate the effects of green tea consumption on cognitive dysfunction. Twelve elderly nursing home residents with cognitive dysfunction (Mini-Mental State Examination Japanese version (MMSE-J) score: <28) participated in the study (2 men, 10 women; mean age, 88 years). The participants consumed green tea powder 2 g/day for 3 months. After three months of green tea consumption, the participants’ MMSE-J scores were significantly improved (before, 15.3 ± 7.7; after, 17.0 ± 8.2; p = 0.03). This result suggests that green tea consumption may be effective in improving cognitive function or reducing the progression of cognitive dysfunction; however, long-term large-scale controlled studies are needed to further clarify the effect.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.