Ugly, discolored toe nails may be a sign of a fungal infection. Besides being embarrassing, untreated fungal infections can spread. Guard yourself against toenail fungus with these foot health tips from the American Podiatric Medical Association: * Wash your feet regularly with soap and water. * Dry them thoroughly. * Make sure your shoes fit properly. * Wear shower shoes in public areas. * Change socks, hosiery, even shoes, daily. * Clip toenails straight across so the nail doesn't extend past the tip of the toe. * Use a recommended foot powder talcum, not starch. * Wear socks made of synthetic fiber.