Nutritional Advice El Mondo
Objectives:
Is there a causal relationship between drinking green tea and lowering blood pressure in healthy individuals?
Study design:
This review article included 9 RCTs with 345 healty individuals in the intervention group (group with green tea) and 335 healthy individuals in the control group (group without green tea).
The mean age of the individuals in the intervention group was 35.89 ± 8.52, while the mean age of the control group was 36.48 ± 7.68.
All studies clearly described allocation randomization, none had incomplete outcome data, and all used appropriate statistical analysis.
The completion rate of the consumption of green tea ranged from 85-100%.
No publication bias was observed in the studies.
Results and conclusions:
The investigators found combined results of the studies showed that green tea was effective in lowering systolic blood pressure in healthy individuals [MD = -2.99, 95% CI = -3.77 to -2.22, p 0.00001, I2 = 0%].
The investigators found combined results of the studies showed that green tea was effective in lowering diastolic blood pressure in healthy individuals [MD= -0.95, 95% CI = -1.62 to -0.27, p = 0.006, I2 = 0%].
The investigators concluded in healthy individuals, green tea supplementation reduces systolic blood pressure by 2.99 mmHg and diastolic blood pressure by 0.95 mmHg.
Original title:
Effect of Green Tea on Blood Pressure in Healthy Individuals: A Meta-Analysis by Ayaz EY, Dincer B and Mesci B.
Link:
https://pubmed.ncbi.nlm.nih.gov/36689359/
Additional information of El Mondo:
Find more information/studies on green tea, lowering blood pressure and cardiovascular diseases right here.