Black tea consumption has been associated with maintaining healthy arteries in people with a history of heart disease say the authors of a study published by the American Heart Association. They found that black tea promotes activity of the endothelium, or inner lining of the blood vessels. A healthy endothelium allows blood vessels to expand or contract in response to minute-by-minute changes in the need for blood flow. It inhibits the formation of blood clots and the development of inflammation in the vessel wall, all of which are often impaired in people with atherosclerosis. In this study, researchers compared the immediate and longer-term effects of black tea to water consumption on the arteries of 50 people with coronary artery disease, and found that only the tea improved arterial function. Senior author Dr. Joseph Vita says these findings suggest that black tea may help reverse arterial dysfunction and could reduce the risk of heart attacks.
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