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Black tea shows heart health benefits: RCT data
date:May 17, 2012
of water-extractable polyphenols, while black tea (green tea that has been oxidized by fermentation) contains between 3 and 10 per cent. Oolong tea is semi-fermented tea and is somewhere between green and black tea.


Study details


The researchers recruited 87 people aged between 25 and 60 to participate in their prospective randomized controlled clinical trial. Participants were randomly assigned to consume either three cups (200 ml) of black tea per day or the same volume of hot water for 12

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