A mouthful of dark chocolate each day could reduce blood pressure, cutting the risk of stroke, research suggests.
This has been attributed to the chemical plant substances known as flavanols which it contains.
researchers at the University Hospital of Cologne say they have now shown that benefits can be achieved with a small amount - 30 calories worth of chocolate.
A 3mm reduction in blood pressure could "reduce the relative risk of stroke mortality by 8%, of coronary artery disease by 5%, and of all cause mortality by 4%", they wrote.
clipped from: news.bbc.co.uk 