A surprising study by German scientists has revealed that adding milk to tea stops its ability to dilate blood vessels and give antioxidant benefits, two protective factors for a healthy heart and cardiovascular system.I'll have another cup of China black, please.
The study is published online in the European Heart Journal and was conducted by a group of scientists from the University of Berlin's Charité Hospital.
The small research study was conducted on 16 healthy women volunteers who drank half a litre of black tea with and without skimmed milk, or just hot water as a control. Before and after drinking their tea or water, the women were examined by ultrasound to measure the dilation of an artery in their arm.
The results showed that the "flow mediated dilation" (FMD) of the artery was significantly improved by black tea, but this effect was completely "blunted" by the additon of milk.
(Props to Eliot for the link. My gai wan found here.)