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Consumption of green tea, but not black tea or coffee, is associated with reduced risk of cognitive decline.
PLoS One. 2014; 9(5):e96013.Plos

Abstract

Our objective was to determine whether the consumption of green tea, coffee, or black tea influences the incidence of dementia and mild cognitive impairment (MCI) in older people. We conducted a population-based prospective study with Japanese residents aged >60 years from Nakajima, Japan (the Nakajima Project). Participants received an evaluation of cognitive function and blood tests. The consumption of green tea, coffee, and black tea was also evaluated at baseline. Of 723 participants with normal cognitive function at a baseline survey (2007-2008), 490 completed the follow up survey in 2011-2013. The incidence of dementia during the follow-up period (mean ± SD: 4.9 ± 0.9 years) was 5.3%, and that of MCI was 13.1%. The multiple-adjusted odds ratio for the incidence of overall cognitive decline (dementia or MCI) was 0.32 (95% CI: 0.16-0.64) among individuals who consumed green tea every day and 0.47 (95% CI: 0.25-0.86) among those who consumed green tea 1-6 days per week compared with individuals who did not consume green tea at all. The multiple-adjusted odds ratio for the incidence of dementia was 0.26 (95% CI: 0.06-1.06) among individuals who consumed green tea every day compared with those who did not consume green tea at all. No association was found between coffee or black tea consumption and the incidence of dementia or MCI. Our results indicate that green tea consumption is significantly associated with reduced risk of cognitive decline, even after adjustment for possible confounding factors.

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Authors+Show Affiliations

Noguchi-Shinohara M
Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan.
Yuki S
Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan.
Dohmoto C
Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan.
Ikeda Y
Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan.
Samuraki M
Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan.
Iwasa K
Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan.
Yokogawa M
Department of Physical Therapy, Division of Health Sciences, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan.
Asai K
Bishoen Geriatric Health Services Facility, Suzu, Japan.
Komai K
Department of Neurology, Ioh Hospital, National Hospital Organization, Kanazawa, Japan.
Nakamura H
Department of Environmental and Preventive Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan.
Yamada M
Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan.

MeSH

AgedAged, 80 and overCoffeeCognitive DysfunctionDementiaDrinkingFemaleHealth SurveysHumansIncidenceJapanMaleMiddle AgedProspective StudiesRiskTea

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24828424

Citation

Noguchi-Shinohara, Moeko, et al. "Consumption of Green Tea, but Not Black Tea or Coffee, Is Associated With Reduced Risk of Cognitive Decline." PloS One, vol. 9, no. 5, 2014, pp. e96013.
Noguchi-Shinohara M, Yuki S, Dohmoto C, et al. Consumption of green tea, but not black tea or coffee, is associated with reduced risk of cognitive decline. PLoS One. 2014;9(5):e96013.
Noguchi-Shinohara, M., Yuki, S., Dohmoto, C., Ikeda, Y., Samuraki, M., Iwasa, K., Yokogawa, M., Asai, K., Komai, K., Nakamura, H., & Yamada, M. (2014). Consumption of green tea, but not black tea or coffee, is associated with reduced risk of cognitive decline. PloS One, 9(5), e96013. https://doi.org/10.1371/journal.pone.0096013
Noguchi-Shinohara M, et al. Consumption of Green Tea, but Not Black Tea or Coffee, Is Associated With Reduced Risk of Cognitive Decline. PLoS One. 2014;9(5):e96013. PubMed PMID: 24828424.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Consumption of green tea, but not black tea or coffee, is associated with reduced risk of cognitive decline. AU - Noguchi-Shinohara,Moeko, AU - Yuki,Sohshi, AU - Dohmoto,Chiaki, AU - Ikeda,Yoshihisa, AU - Samuraki,Miharu, AU - Iwasa,Kazuo, AU - Yokogawa,Masami, AU - Asai,Kimiko, AU - Komai,Kiyonobu, AU - Nakamura,Hiroyuki, AU - Yamada,Masahito, Y1 - 2014/05/14/ PY - 2014/02/20/received PY - 2014/04/02/accepted PY - 2014/5/16/entrez PY - 2014/5/16/pubmed PY - 2014/12/31/medline SP - e96013 EP - e96013 JF - PloS one JO - PLoS One VL - 9 IS - 5 N2 - Our objective was to determine whether the consumption of green tea, coffee, or black tea influences the incidence of dementia and mild cognitive impairment (MCI) in older people. We conducted a population-based prospective study with Japanese residents aged >60 years from Nakajima, Japan (the Nakajima Project). Participants received an evaluation of cognitive function and blood tests. The consumption of green tea, coffee, and black tea was also evaluated at baseline. Of 723 participants with normal cognitive function at a baseline survey (2007-2008), 490 completed the follow up survey in 2011-2013. The incidence of dementia during the follow-up period (mean ± SD: 4.9 ± 0.9 years) was 5.3%, and that of MCI was 13.1%. The multiple-adjusted odds ratio for the incidence of overall cognitive decline (dementia or MCI) was 0.32 (95% CI: 0.16-0.64) among individuals who consumed green tea every day and 0.47 (95% CI: 0.25-0.86) among those who consumed green tea 1-6 days per week compared with individuals who did not consume green tea at all. The multiple-adjusted odds ratio for the incidence of dementia was 0.26 (95% CI: 0.06-1.06) among individuals who consumed green tea every day compared with those who did not consume green tea at all. No association was found between coffee or black tea consumption and the incidence of dementia or MCI. Our results indicate that green tea consumption is significantly associated with reduced risk of cognitive decline, even after adjustment for possible confounding factors. SN - 1932-6203 UR - https://www.unboundmedicine.com/medline/citation/24828424/Consumption_of_green_tea_but_not_black_tea_or_coffee_is_associated_with_reduced_risk_of_cognitive_decline_ DB - PRIME DP - Unbound Medicine ER -