Flavonoid-rich foods are associated with a reduced risk of erectile dysfunction, according to a new study. Of all the different flavonoids, Anthocyanins (found in blueberries, cherries, blackberries, radishes and blackcurrant), flavanones and flavones (found in citrus fruits) were found to offer the greatest benefits in preventing the condition. This research shows that eating a flavonoid-rich diet is as good for erectile function as briskly walking for up to five hours a week.