Effect of tea on blood pressure for secondary prevention of cardiovascular disease: a systematic review and meta-analysis of randomized controlled trials
Abstract
CONTEXT: Tea has been proposed as an antihypertensive agent for individuals with elevated blood pressure, yet the evidence for this has not been systematically reviewed to date. OBJECTIVE: The aim of this review was to evaluate the effects of tea on blood pressure in individuals within the prehypertensive and hypertensive blood pressure ranges. DATA SOURCES: The CENTRAL, PubMed, Embase, and Web of Science databases were searched for all relevant studies published from 1946 to September 27, 2013. STUDY SELECTION: The selection criteria included randomized controlled trials of adults whose blood pressure was within hypertensive or prehypertensive ranges and in which the applied intervention was green or black tea; controls consisting of placebo, minimal tea intervention, or no intervention; and a follow-up period of at least 2 months. DATA EXTRACTION: Two reviewers independently extracted data on participants, interventions, comparators, outcomes, and study design. Mean differences (MDs) and 95% confidence intervals (95%CIs) were pooled to generate summary effect estimates. RESULTS: Meta-analyses of 10 trials (834 participants) showed statistically significant reductions in systolic blood pressure (MD -2.36 mmHg, 95%CI -4.20 to -0.52) and diastolic blood pressure (MD -1.77 mmHg, 95%CI -3.03 to -0.52) with tea consumption. CONCLUSIONS: Consumption of green or black tea can reduce blood pressure in individuals within prehypertensive and hypertensive ranges, although further investigation with studies of longer duration and stronger methodological quality is warranted to confirm these findings.
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In meta-analyses of trials, green tea, black tea, and herbal roselle tea each modestly lower BP; green and black tea, but not herbal roselle tea, also lower LDL-cholesterol.
“However, in meta-analyses of trials, green tea, black tea, and herbal roselle tea each modestly lower BP;279-281 while green and black tea, but not herbal roselle tea, also lower LDL-cholesterol.282-284”
From Dietary and Policy Priorities for Cardiovascular Disease, Diabetes, and Obesity: A Comprehensive Review (2016) · cites this paper as [281]
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Genetically predicted green tea intake and the risk of arterial embolism and thrombosis
Jia, L., Chen, Y., Liu, C., Luan, Y., & Jia, M. (2023) · Frontiers in Medicine · doi:10.3389/fmed.2023.1156254 · Cited by 5 · see citing works
Herbal Medicine for Hypertension: A Review of Potential TherapeuticsPreprint
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Heart health and nutraceuticals
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Beneficial health effects and possible health concerns of tea consumption: a review
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Exploring Possible Health Effects of Polyphenols in Foods
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Role of Tea Polyphenols in Metabolic Syndrome
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Tea, Coffee and Health Benefits
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Whole Plant Foods and Hypertension
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Nutrients Intake and Hypertension
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Grüner Tee – Daten und Studien zur chinesischen und westlichen Wirkung
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Therapeutic Potential of Tea and Its Compounds in the Central Nervous System Disorders
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- Authors
- Yarmolinsky, J., Gon, G., & Edwards, P.
- Affiliations
- Universidade Federal do Rio Grande do Sul (BR)
- Venue
- Nutrition Reviews
- Publisher
- Oxford University Press (OUP)
- Published
- 2015-03-24
- Volume
- 73
- Issue
- 4
- Pages
- 236-246
- ISSN
- 0029-6643 (ISSN-L)
- 1753-4887
- OpenAlex
- W1966950954
- Cited by
- 80
- References
- 39
- Citations by year
- 2026: 1 · 2025: 7 · 2024: 3 · 2023: 2 · 2022: 8 · 2021: 5 · 2020: 13 · 2019: 9 · 2018: 10 · 2017: 11 · 2016: 9 · 2015: 2
- FWCI
- 1.57
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Nutrition Reviews (publishedVersion)
- PubMed (publishedVersion)
- Explore Bristol Research (publishedVersion)
- Bristol Research (University of Bristol) (submittedVersion)
- Topics
- Health Sciences › Medicine › Pathology and Forensic Medicine › Tea Polyphenols and Effects
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Blood Pressure and Hypertension Studies
- Health Sciences › Medicine › Pharmacology › Coffee research and impacts
- Keywords
- tea, green tea, black tea, blood pressure, hypertension, prehypertension, antihypertensive effect, cardiovascular disease prevention, dietary intervention
- MeSH terms
- Antihypertensive Agents, Blood Pressure, Humans, Hypertension, Phytotherapy, Plant Extracts, Tea, Randomized Controlled Trials as Topic, Camellia sinensis, Secondary Prevention
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