SynthesisEuropean journal of nutrition2014
Green tea catechins and blood pressure: a systematic review and meta-analysis of randomised controlled trials.
Synthesis in European journal of nutrition, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers, 6 of them syntheses that pooled it.
What it found
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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.
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.
Who cites it
48 citing papers in PubMed, 6 syntheses or guidelines pooled it, 136 citations in OpenAlex.
- The Effect of Antioxidant Polyphenol Supplementation on Cardiometabolic Risk Factors: A Systematic Review and Meta-Analysis.Nutrients · 2024Pooled it
- Japanese-Style Diet and Cardiovascular Disease Mortality: A Systematic Review and Meta-Analysis of Prospective Cohort Studies.Nutrients · 2022Pooled it
- Tea intake and cardiovascular disease: an umbrella review.Annals of medicine · 2021Pooled it
- Dose-Response Relation between Tea Consumption and Risk of Cardiovascular Disease and All-Cause Mortality: A Systematic Review and Meta-Analysis of Population-Based Studies.Advances in nutrition (Bethesda, Md.) · 2020Pooled it
- Perspective: The Role of Beverages as a Source of Nutrients and Phytonutrients.Advances in nutrition (Bethesda, Md.) · 2020Pooled it
- Effect of green tea consumption on blood pressure: a meta-analysis of 13 randomized controlled trials.Scientific reports · 2014Pooled it
- Effects of coffee and tea on postprandial cardiometabolic risk factors in healthy individuals: a randomized crossover trial.Asia Pacific journal of clinical nutrition · 2024Trial
- New Nutraceutical Combination Reduces Blood Pressure and Improves Exercise Capacity in Hypertensive Patients Via a Nitric Oxide-Dependent Mechanism.Journal of the American Heart Association · 2020Trial
- Effects of green tea catechin extract on serum lipids in postmenopausal women: a randomized, placebo-controlled clinical trial.The American journal of clinical nutrition · 2016Trial
- Functional mouth rinse containing inorganic nitrate and antioxidants bolsters the enterosalivary pathway and lowers blood pressure in Wistar rats.Scientific reports · 2025Article
- Advancing functional foods: a systematic analysis of plant-derived exosome-like nanoparticles and their health-promoting properties.Frontiers in nutrition · 2025Review
- The role of tea in managing cardiovascular risk factors: potential benefits, mechanisms, and interventional strategies.Frontiers in nutrition · 2025Review
- Identification of genetic factors influencing flavonoid biosynthesis through pooled transcriptome analysis in mungbean sprouts.Frontiers in plant science · 2025Article
- From a Cup of Tea to Cardiovascular Care: Vascular Mechanisms of Action.Life (Basel, Switzerland) · 2024Review
- Effects of green tea catechin on the blood pressure and lipids in overweight and obese population-a meta-analysis.Heliyon · 2023Article
- Advances in 4-Hydroxyphenylacetate-3-hydroxylase Monooxygenase.Molecules (Basel, Switzerland) · 2023Review
- Free Radicals and Obesity-Related Chronic Inflammation Contrasted by Antioxidants: A New Perspective in Coronary Artery Disease.Metabolites · 2023Review
- Potential Hypoglycemic and Antilipidemic Activity of Polyphenols fromMolecules (Basel, Switzerland) · 2023Article
- Effects of a catechins-enriched diet associated with moderate physical exercise in the prevention of hypertension in spontaneously hypertensive rats.Scientific reports · 2022Article
- Supplementation with Two New Standardized Tea Extracts Prevents the Development of Hypertension in Mice with Metabolic Syndrome.Antioxidants (Basel, Switzerland) · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeAlthough previous literature has reported that regular green tea consumption may improve blood pressure, the evidence from these studies is not consistent. The present study systematically reviewed randomised controlled trials and examined the effect of green tea consumption on blood pressure using meta-analysis.
methodsSearch of ProQuest, PubMed, Scopus and Cochrane Library (CENTERAL) was conducted, to identify eligible articles. Articles from 1995 to 2013 were included. A random-effect model was chosen to calculate the effect of combined trials.
resultThirteen studies were included in the meta-analysis. Green tea consumption significantly changed systolic blood pressure, by -2.08 mm Hg (95% CI -3.06, -1.05), and diastolic blood pressure, by -1.71 mm Hg (95% CI -2.86, -0.56), compared to the control. Changes in lipid profile, blood glucose and body mass index were also assessed in the meta-analysis. A significant reduction was found in total cholesterol (-0.15 mmol/L [95% CI -0.27, -0.02]) and low-density lipoprotein cholesterol (-0.16 mmol/L [95% CI -0.22, -0.09]). Changes in other parameters did not reach statistical significance. Subgroup analysis suggested a greater reduction in both systolic and diastolic blood pressure in studies that included participants with a baseline mean systolic blood pressure of ≥ 130 mm Hg, and studies involving consuming green tea as an extract.
conclusionThe present meta-analysis suggests that green tea and its catechins may improve blood pressure, and the effect may be greater in those with systolic blood pressure ≥ 130 mm Hg. The meta-analysis also suggests that green tea catechins may improve total and low-density lipoprotein cholesterol.
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What OpenQuestion holds
Registered trials
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.