According to a research in London cardio-protective potential of cranberry juice may help to lower blood pressure and help promote heart health.

Researchers at Queen Mary University of London compared the cardio-protective potential of cranberry juice and that of red wine, cocoa and green tea and found that oligomeric procyanidins were present in regular and light cranberry juice cocktail.

It was stated by Dr. Roger Corder of Queen Mary University that in the study it was identified oligomeric procyanidins in cranberries that can promote a healthy heart by inhibiting Endothelin 1 synthesis - a blood vessel constrictor that causes heart disease.

Corder, author of "The Red Wine Diet," said in a statement," Red wine has long been associated with heart health, but this new study shows that cranberry juice is a very promising alcohol-free alternative.

We have now identified oligomeric procyanidins as the specific compound in cranberries that can boost the health of blood vessels, helping to prevent blood vessel constriction -- a leading cause of high blood pressure."

Journal of Agricultural and Food Chemistry published the research.