Research
Hormonal
High-catechin green tea extract reduces systolic blood pressure in individuals with initial systolic blood pressure of 130 mm Hg or higher, but not in those with lower initial blood pressure.
If you have mild hypertension (SBP >= 130 mm Hg) and visceral obesity, consuming ~583 mg of catechins daily from green tea extract may help lower your systolic blood pressure. This effect was not seen in individuals with normal blood pressure.
GoodQualifiesHIGH confidence
A greater decrease in systolic blood pressure (SBP) was found in the catechin group compared with the control group for subjects whose initial SBP was 130 mm Hg or higher.
Why this rating
Stratified analysis within a robust RCT design.
Source
A Green Tea Extract High in Catechins Reduces Body Fat and Cardiovascular Risks in Humans
Tomonori Nagao et al. · Obesity · 2007
DOI 10.1038/oby.2007.176
rct · n=240Cited 518×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Daily ingestion of 583 mg of green tea catechins for 12 weeks significantly reduces body fat mass, visceral fat area, and LDL cholesterol in humans with visceral fat-type obesity, independent of changes in usual diet or physical activity.Good
- High-catechin green tea extract reduces LDL cholesterol levels in humans with visceral fat-type obesity.Good
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