Green tea catechins and blood pressure: a systematic review and meta-analysis of randomised controlled trials
Xu R, Yang K, Ding J, Chen G
Published in European Journal of Nutrition
Methodology
Meta-analysis of 24 randomised controlled trials of green tea catechin supplementation on office blood pressure
Key Findings
Green tea significantly reduced systolic blood pressure by about 1.17 mmHg and diastolic by 1.24 mmHg, with larger effects in longer trials.
Conclusions
Green tea catechins produce small but consistent blood pressure reductions.
Limitations
Small effect size; variable caffeine content confounds interpretation.
Supplements Studied
Green tea catechin supplementation significantly reduced systolic and diastolic blood pressure by roughly 1.2 mmHg.
Outcomes Measured
Green tea catechins significantly reduced systolic and diastolic blood pressure.
Related Health Concerns
Study Details
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This information is for educational purposes only. Always consult a healthcare professional before starting any supplement regimen.