Resveratrol

Resveratrol might be a key ingredient in red wine that helps prevent damage to blood vessels, reduces "bad" cholesterol and prevents blood clots.

Most research on resveratrol has been conducted on animals, not people. Research in mice given resveratrol has indicated that the antioxidant might also help protect them from obesity and diabetes, both of which are strong risk factors for heart disease.

Some research shows that resveratrol could be linked to a reduced risk of inflammation and blood clotting, both of which can lead to heart disease. More research is needed before it's known whether resveratrol was the cause for the reduced risk.

Research into the potential heart-health benefits of resveratrol is continuing.