Blueberries

By Janice M. Horowitz

Pint for pint, these little blue jewels may contain more antioxidants than any other fruit or vegetable. The most powerful health-promoting compounds in blueberries are anthocyanins, phytochemicals that belong to the flavonoid family. Besides combatting the free-radical damage linked to heart disease and cancer, anthocyanins may boost brainpower—at least in rats. When fed blueberry extract for nine weeks, elderly rats outperformed a control group at such tasks as navigating mazes and balancing on rotating logs. And when aging rats ate a blueberry-enriched diet for four months, they performed as well in memory tests as younger rats. Another blueberry benefit: like cranberries, they seem to fight off urinary-tract infections by preventing E. coli bacteria from adhering to the bladder wall.