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Green Tea Linked to Improved Blood Pressure in Non-Smokers

Studies examining the association between blood pressure and tea have come back with inconsistent results. A recent study sought to address that issue and found that green tea may help control blood pressure in non-smokers.

Participants in the study included 1109 Chinese men and women who took part in the Jiangsu Nutrition Study between 2002 and 2007. The researchers took blood pressure measurements at the onset and conclusion of the study. They assessed both black and green tea consumption in a follow-up survey in 2007.

After examining the data, the researchers discovered that both total tea and green tea consumption were inversely associated with smaller increases in diastolic but not systolic blood pressure. Specifically, drinking at least 10g per day of total tea daily was associated with a 2.41mmHg lower increase in diastolic blood pressure compared to those who did not drink tea. Drinking the same amount of green tea daily was associated with a 3.68 mmHg lower increase.

The same effects were not seen for black tea alone nor for smokers.

Researchers from the University of Adelain in Australia and the Jiangsu Provincial Center for Disease Control and Prevention in China conducted the study. It was published on October 14, 2014, in Nutrition Journal.

Green tea has been linked in previous studies with numerous health benefits. These benefits are usually attributed to the high level of powerful antioxidants found in green tea called polyphenols, which have been shown to promote weight loss, improve heart health, aid in digestion and decrease the risk of neurodegenerative diseases.

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