Meanwhile, a control group that drank a beverage with the same amount of caffeine, but no tea, did not get the same results.
Previous research has shown black tea can improve the function of cells that line blood vessels.
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Meanwhile, a control group that drank a beverage with the same amount of caffeine, but no tea, did not get the same results.
Previous research has shown black tea can improve the function of cells that line blood vessels.
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