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Thursday, March 10, 2011

Green Tea and Coronary Artery Disease

A recent study suggests green tea consumption may decrease the risk of coronary artery disease (CAD).

CAD occurs when the blood vessels to the heart muscle become blocked by plaque and narrowed overtime. This narrowing decreases the space through which oxygenated blood can flow, which may lead to potentially fatal complications, including heart attack.

In a new study, researchers conducted a comprehensive literature search to evaluate whether green or black tea consumption is associated with the risk of CAD. A total of 13 studies on black tea and five studies on green tea were included.

The researchers found that there was a significant link between high green tea consumption and CAD. Additionally, increasing green tea consumption by one cup per day was associated with a 10 percent reduction in the risk of CAD. However, there was no significant association between black tea consumption and CAD.

The authors concluded that green tea consumption may slightly reduce the risk of developing CAD; however, additional research is necessary before firm conclusions can be made.

For more information about green or black tea, please visit Natural Standard's Foods, Herbs & Supplements database.

References

Natural Standard: The Authority on Integrative Medicine. www.naturalstandard.com
Wang ZM, Zhou B, Wang YS, et al. Black and green tea consumption and the risk of coronary artery disease: a meta-analysis. Am J Clin Nutr. 2011 Mar;93(3):506-15. View Abstract

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