↓ Skip to main content

Green tea effects on cognition, mood and human brain function: A systematic review

Overview of attention for article published in Phytomedicine, July 2017
Altmetric Badge

About this Attention Score

  • In the top 5% of all research outputs scored by Altmetric
  • One of the highest-scoring outputs from this source (#3 of 2,807)
  • High Attention Score compared to outputs of the same age (99th percentile)
  • High Attention Score compared to outputs of the same age and source (99th percentile)

Mentioned by

news
72 news outlets
blogs
6 blogs
twitter
42 X users
facebook
3 Facebook pages
video
18 YouTube creators

Citations

dimensions_citation
140 Dimensions

Readers on

mendeley
396 Mendeley
You are seeing a free-to-access but limited selection of the activity Altmetric has collected about this research output. Click here to find out more.
Title
Green tea effects on cognition, mood and human brain function: A systematic review
Published in
Phytomedicine, July 2017
DOI 10.1016/j.phymed.2017.07.008
Pubmed ID
Authors

Edele Mancini, Christoph Beglinger, Jürgen Drewe, Davide Zanchi, Undine E. Lang, Stefan Borgwardt

Abstract

Green tea (Camellia sinensis) is a beverage consumed for thousands of years. Numerous claims about the benefits of its consumption were stated and investigated. As green tea is experiencing a surge in popularity in Western culture and as millions of people all over the world drink it every day, it is relevant to understand its effects on the human brain. To assess the current state of knowledge in the literature regarding the effects of green tea or green tea extracts, l-theanine and epigallocatechin gallate both components of green tea-on general neuropsychology, on the sub-category cognition and on brain functions in humans. We systematically searched on PubMed database and selected studies by predefined eligibility criteria. We then assessed their quality and extracted data. We structured our effort according to the PRISMA statement. We reviewed and assessed 21 studies, 4 of which were randomised controlled trials, 12 cross-over studies (both assessed with an adapted version of the DELPHI-list), 4 were cross-sectional studies and one was a cohort study (both assessed with an adapted version of the Newcastle-Ottawa assessment scale). The average study quality as appraised by means of the DELPHI-list was good (8.06/9); the studies evaluated with the Newcastle-Ottawa-scale were also good (6.7/9). The reviewed studies presented evidence that green tea influences psychopathological symptoms (e.g. reduction of anxiety), cognition (e.g. benefits in memory and attention) and brain function (e.g. activation of working memory seen in functional MRI). The effects of green tea cannot be attributed to a single constituent of the beverage. This is exemplified in the finding that beneficial green tea effects on cognition are observed under the combined influence of both caffeine and l-theanine, whereas separate administration of either substance was found to have a lesser impact.

X Demographics

X Demographics

The data shown below were collected from the profiles of 42 X users who shared this research output. Click here to find out more about how the information was compiled.
Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 396 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 396 100%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 70 18%
Student > Master 51 13%
Student > Ph. D. Student 36 9%
Researcher 30 8%
Other 20 5%
Other 68 17%
Unknown 121 31%
Readers by discipline Count As %
Medicine and Dentistry 52 13%
Nursing and Health Professions 37 9%
Agricultural and Biological Sciences 31 8%
Pharmacology, Toxicology and Pharmaceutical Science 31 8%
Biochemistry, Genetics and Molecular Biology 25 6%
Other 84 21%
Unknown 136 34%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 583. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 26 March 2024.
All research outputs
#40,144
of 25,489,496 outputs
Outputs from Phytomedicine
#3
of 2,807 outputs
Outputs of similar age
#813
of 327,495 outputs
Outputs of similar age from Phytomedicine
#1
of 18 outputs
Altmetric has tracked 25,489,496 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 99th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 2,807 research outputs from this source. They typically receive more attention than average, with a mean Attention Score of 8.2. This one has done particularly well, scoring higher than 99% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 327,495 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 99% of its contemporaries.
We're also able to compare this research output to 18 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 99% of its contemporaries.