By Nancy Lapid
Updated November 25, 2008
Refined grains have been processed in a mill to remove the bran and germ. This processing gives the grain a finer texture and improves its shelf life, but it also removes fiber, iron, and vitamins. In other words, refined grains have less fiber and are less nutritious than whole grains. Most gluten-free flours are refined, as is white rice.
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