- Tea consumption and cognitive impairment and decline in older Chinese adults. Tze-Pin Ng, Lei Feng, Mathew Niti, Ee-Heok Kua and Keng-Bee Yap. American Journal of Clinical Nutrition, Vol. 88, No. 1, 224-231, July 2008. (Accessed Jan.31, 2009).
- In vitro anti-beta-secretase and dual anti-cholinesterase activities of Camellia sinensis L. (tea) relevant to treatment of dementia. Okello EJ, Savelev SU, Perry EK. Phytother Res. 2004 Aug;18(8):624-7.
- Effects of green tea polyphenol on cognitive and acetylcholinesterase activities. Biosci Biotechnol Biochem. Kim HK, Kim M, Kim S, Kim M, Chung JH. 2004. Sept. 68(9):1977-9. http://www.ncbi.nlm.nih.gov/pubmed/15388975. (Accessed March 31, 2009.)