PapersPMID:25079225
The effect of black tea on blood pressure: a systematic review with meta-analysis of randomized controlled trials.
What moved
1 findingHow to read these marks →- Decreases systolic blood pressure
moderatereplicated ×2
“In the pooled analyses using random effects models, tea intake reduced SBP with 1.8 mmHg (95% CI: −2.8, −0.7; P = 0.0013) and DBP with 1.3 mmHg (95% CI: −1.8, −0.8; P<0.0001).”
- Study
- meta-analysis
- Effect
- −1.8 mean difference, 95% CI −2.8 to −0.7
- Interests
- Industry funded
- Dose studied
- 400 to 1800 mL tea per day, 240 to 1500 mg flavonoids per day, 1 to 26 weeks
- Population
- Adults in 11 controlled studies (12 arms): healthy, hypertensive, coronary artery disease and high cardiovascular risk; office and 24-hour ambulatory readings pooled
Study record
- Design
- meta-analysis
- Species
- human
- Population
- Adults in 11 controlled intervention studies (12 arms) of black tea leaf or extract powder: healthy, CAD, hypertensive, high CVD risk and mildly hypercholesterolaemic subjects
- Participants
- 378
- Comparator
- placebo
- Duration
- not reported
- Endpoints measured
- 20