Those antioxidant flavonoids found in cocoa have yet another use - they can help prevent cancer. They work by stopping the body from making 'free radicals' which damage cells, and in turn can lead to cancer.
Researchers in the US have done experiments that show the antioxidants in chocolate are enough to mean that eating chocolate rich in cocoa just three times a month could add a year to your life expectancy - we wonder what happens if you eat it every day...