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How a glass or two of champagne really does lift the heart | Life and style | The Observer

The team found that champagne had a far greater impact on nitric oxide levels in the blood than did a polyphenol-free alternative of alcohol and carbonated water. In short, its polyphenols have the ability to improve blood pressure and reduce heart disease risks. "Our data suggests that a daily moderate consumption of champagne wine may improve vascular performance via the delivery of phenolic constituents," state the researchers in their paper. They have yet to test other types of fizz, such as cava and prosecco, but Spencer said there was "no reason" in principle that they should not perform in the same way.