(Reuters Health) - Most children and adults in the U.S. are getting less than the recommended amounts of whole grains and dietary fiber, according to a recent study.

Researchers found people who did eat the recommended three or more servings of whole grains each day also tended to consume the most fiber.

Whole grains are present in some types of hot and cold cereal and bread. Previous studies have tied whole grain intake to a reduced risk of type 2 diabetes and heart disease among adults. The health benefits are in part attributed to the fiber in whole grains.