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Could Red Wine Supplement Block Exercise Benefits?

In small study, resveratrol undermined gains in blood pressure, cholesterol and aerobic fitness

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"To test that, we would have to make a dose-response study," he said. "But given that the amount of resveratrol we gave in the present study equals several bottles of red wine daily, we can conclude that 250 mg resveratrol as a supplement is not a good thing when training."

Joyner said a healthy diet might be a better option than taking antioxidant supplements such as resveratrol. "There is some thinking that it is best to get antioxidants via a diet rich in fruits, vegetables and healthy oils," he said.

Although previous studies suggested that resveratrol may improve the benefits of exercise on heart health and help protect against diabetes, these findings were reported in animals, not people.

A separate 2012 study conducted by researchers at the Washington University School of Medicine and published in the journal Cell Metabolism also found that resveratrol supplementation does not have metabolic benefits in relatively healthy, middle-aged women.

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