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Related Experiment Video

Updated: Apr 23, 2026

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

Kazuki Ide1, Hiroshi Yamada2, Norikata Takuma3

  • 1Department 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.

Nutrients
|October 1, 2014
PubMed
Summary
This summary is machine-generated.

Green tea consumption may improve cognitive function in the elderly. A study showed significant improvements in cognitive scores after three months of daily green tea intake, suggesting potential benefits for cognitive dysfunction.

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Area of Science:

  • Gerontology
  • Nutritional Neuroscience
  • Clinical Nutrition

Background:

  • Green tea is recognized for its health benefits.
  • The impact of green tea on cognitive dysfunction requires clinical validation.
  • Cognitive decline is a significant concern in the elderly population.

Purpose of the Study:

  • To investigate the clinical effects of green tea consumption on cognitive dysfunction in elderly individuals.
  • To assess changes in cognitive function scores following a period of green tea intake.

Main Methods:

  • A clinical study involving twelve elderly nursing home residents with cognitive dysfunction (Mini-Mental State Examination Japanese version (MMSE-J) score <28).
  • Participants consumed 2 grams of green tea powder daily for three months.
  • Cognitive function was assessed using MMSE-J scores before and after the intervention.

Main Results:

  • A statistically significant improvement in MMSE-J scores was observed after three months of green tea consumption (p = 0.03).
  • The mean MMSE-J score increased from 15.3 ± 7.7 to 17.0 ± 8.2.
  • This indicates a potential positive effect of green tea on cognitive function in this population.

Conclusions:

  • Green tea consumption may be effective in improving cognitive function or slowing the progression of cognitive dysfunction in the elderly.
  • Further long-term, large-scale controlled studies are necessary to confirm these findings.
  • The study highlights a potential dietary intervention for age-related cognitive decline.