Teasing out tea's heart-healthy effect

By Damaris Christensen, 15:47 PM April 15, 2008

From New Orleans, at a meeting of the American Heart Association

Previous studies have suggested that people who drink several glasses of black tea each day are less likely to develop heart disease than are people who don't drink tea. Joseph A. Vita of the Boston University School of Medicine reports that he may have found a mechanism for tea's apparent protective effect.

In a study, Vita found that drinking black tea increases the ability of the blood vessels in a person's arm to dilate. Bloo...

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