It's not an old wive's tale: cranberry helps prevent and treat urinary tract infections. And it's not just the acidity: a compound in cranberries and blueberries keeps bacteria from sticking to bladder and urinary tract walls. Cranberries are high in several kinds of antioxidants, including proanthocyanidins, which give the ripe berries their vivid red color. In the 1672 book New England Rarities Discovered , author John Josselyn described cranberries: "Sauce for the Pilgrims, cranberry or