You shouldn't underestimate this small piece of fruit. Blueberries are rich in minerals, vitamin A and fiber.The health effects of those nutrients include keeping proper functioning of the body, improving eyes and preventing constipation. Blueberries are one of the best antioxidant fruits, says Dorothy Klimis-Zacas, professor of clinical nutrition at the University of Maine. Wild blueberries, which are available at many grocery stores, are even more nutritious than regular blueberries, she says. The consumption of wild blueberries can possibly help relax arteries and reduce risks associated with cardiovascular disease. Klimis-Zacas' research group found such health effects in laboratory rats fed blueberries. Fresh or frozen berries are more nutritious than the ones in pies or muffins, she says. She recommends eating blueberries with cereal or drinking blueberry smoothies because a small amount of sugar helps digest healthy nutrients more efficiently. Photo illustration by Sachiko Miyakawa Berry good: Eating blueberries can improve your eyes and prevent constipation. — Sachiko Miyakawa April 2,2009 11