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Polyphenol-Rich Grape and Wine Extracts May Help Lower Blood Pressure

The cardiovascular benefits of the Mediterranean Diet have been partially attributed to the polyphenols found in grapes and red wine. A recent study suggests that polyphenol-rich grape juice and wine extracts may help lower blood pressure in people with untreated mild hypertension.

Participants in the study included 60 people who were give either the grape and wine extracts — containing 800 mg of polyphenols — together or just the grape extract alone.

At the conclusion of the study, the researchers noted a 3-mmHg decrease in systolic blood pressure and a 2-mmHg decrease in diastolic blood pressure in the combination supplement group. They also noted a 10% decrease in plasma concentrations of the vasoconstrictor endothelin-1.

The grape juice alone group showed no blood pressure benefit. Neither of the interventions affected LDL, HDL, or triglyceride levels.

Researchers from Unilever conducted the study. It was published on April 30, 2015, in the journal Nutrients.

Polyphenols have been shown to promote weight loss, improve heart health, aid in digestion and decrease the risk of neurodegenerative diseases.
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