Some of the latest research in this area again confirms such health benefits. After analyzing 25 randomized controlled trials, the systematic review, published in the British Journal of Nutrition in October5 concluded that long-term tea intake significantly improved blood pressure. As reported in Time Magazine:
“After 12 weeks of drinking tea, blood pressure was lower by 2.6 mmHg systolic and 2.2 mmHg diastolic. Green tea had the most significant results, while black tea performed the next best…
Reducing systolic blood pressure by 2.6 mmHg ‘would be expected to reduce stroke risk by 8 percent, coronary artery disease mortality by 5 percent and all-cause mortality by 4 percent at a population level…’”
While unable to determine exactly how much tea you need to drink to receive these benefits, a number of previous studies have suggested the ideal amount lies around three to four cups of tea per day.
For example, one 2007 study8 found “clear evidence” showing that three or more cups of tea—in this case black tea—reduced the risk of coronary heart disease.
Similarly, drinking three to four cups of green tea daily has been shown to promote heart and cardiovascular health,9 again courtesy of its ability to relax blood vessels and protect against blood clots.
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