Evidence map›Paper›PMID 19177186›Full record

ArticleJournal of clinical biochemistry and nutrition2009

The Association between Concentrations of Green Tea and Blood Glucose Levels.

Koutatsu Maruyama, Hiroyasu Iso, Satoshi Sasaki, Yoko Fukino

Abstract read
In one paragraph

Article in Journal of clinical biochemistry and nutrition, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 2 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

10 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Diet and risk of diabetic retinopathy: a systematic review.European journal of epidemiology · 2018
    Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Trial
  6. Article
  7. Article
  8. Green tea and metabolic syndrome: A 10-year research update review.Iranian journal of basic medical sciences · 2021
    Review
  9. Article
  10. Greenselect phytosome for borderline metabolic syndrome.Evidence-based complementary and alternative medicine : eCAM · 2013
    Article
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

4 authors.

Koutatsu MaruyamaDepartment of Food and Nutritional Sciences, Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka-shi 422-8526, Japan.
Hiroyasu Iso
Satoshi Sasaki
Yoko Fukino

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Our objective was to examine whether habitual green tea consumption is associated with blood glucose levels and other biomarkers of glucose metabolism. We conducted a cross-sectional study of 35 male volunteers, 23-63 years old and residing in Shizuoka Prefecture in Japan. Biochemical data were measured and we conducted a questionnaire survey on health, lifestyle, and nutrition, as well as frequency of consumption and concentrations (1%, 2%, and 3%) of green tea. Men who consumed a 3% concentration of green tea showed lower mean values of fasting blood glucose and fructosamine than those who consumed a 1% concentration. Fasting blood glucose levels were found to be significantly associated with green tea concentration (beta = -0.14, p = 0.03). However, green tea consumption frequency showed no significant differences in mean levels of blood glucose, fructosamine and hemoglobin A(1c.) In conclusion, our findings suggest that the consumption of green tea at a high concentration has the potential to reduce blood glucose levels.

Indexed as

blood glucoseconcentration of green teacross sectional studygreen teaJapanese

Identifiers

PMID19177186
PMCPMC2613497

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.