« The most beneficial for the heart are complexes of tannins with caffeine (caffeine tannate), which dilate blood vessels, relieve spasms, and normalize blood pressure. And also catechins, which strengthen capillaries, » says Mikhail Goncharov.
A study by Guilan University of Medicine in Iran found that regular tea consumption (especially green tea) can reduce systolic (upper) blood pressure by 3 mmHg and diastolic (lower) blood pressure by 1 mmHg. However, for a significant effect, the tea must be drunk for more than three months./
