In this study, Concord Grape Juice is said to have a beneficial effect on the heart, comparable to the effect that red wine is said to have. The Concord grape may stimulate the production of nitric oxide, which maintains health blood vessels, among other things. (Note: Arginine, which is contained in many foods, is also said to stimulate production of nitric oxide. And a bit of trivia, nitric oxide and Viagra are related.)


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