Evidence map›Paper›PMID 25268837›Full record

ArticleNutrients2014

Green tea consumption affects cognitive dysfunction in the elderly: a pilot study.

Kazuki Ide, Hiroshi Yamada, Norikata Takuma, Mijong Park, Noriko Wakamiya, Junpei Nakase, Yuuichi Ukawa, Yuko M Sagesaka

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Nutrients, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 5 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

50 citing papers in PubMed, 5 syntheses or guidelines pooled it.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Kazuki IdeDepartment of Drug Evaluation and Informatics, Graduate School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan. s13403@u-shizuoka-ken.ac.jp.
Hiroshi YamadaDepartment of Drug Evaluation and Informatics, Graduate School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan. hyamada@u-shizuoka-ken.ac.jp.
Norikata TakumaWhite Cross Nursing Home, 2-26-1 Suwa-cho, Higashimurayama, Tokyo 189-0021, Japan. hide1844@wa2.so-net.ne.jp.
Mijong ParkDepartment of Drug Evaluation and Informatics, Graduate School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan. parkmjjp@yahoo.co.jp.
Noriko WakamiyaDepartment of Drug Evaluation and Informatics, Graduate School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan. m08129@u-shizuoka-ken.ac.jp.
Junpei NakaseCentral Research Institute, ITO EN, Ltd., 21 Mekami, Makinohara, Shizuoka 421-0516, Japan. j-nakase@itoen.co.jp.
Yuuichi UkawaCentral Research Institute, ITO EN, Ltd., 21 Mekami, Makinohara, Shizuoka 421-0516, Japan. y-ukawa@itoen.co.jp.
Yuko M SagesakaCentral Research Institute, ITO EN, Ltd., 21 Mekami, Makinohara, Shizuoka 421-0516, Japan. y-sagesaka@itoen.co.jp.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

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.

Indexed as

DrinkingTeaAgedAged, 80 and overCognitionCognition DisordersFemaleHumansMalePilot ProjectsTea

Identifiers

PMID25268837
PMCPMC4210905

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.