Foods that are touted as being whole grain may not be as healthful as they appear, experts said, because they often do not include much fiber and can contain unhealthy additives. Study data show that whole grains in diets linked to a lower risk of disease were high in fiber, and research from the Harvard School of Public Health found that whole-grain foods that are high in fiber also contain less sugar, sodium and trans fat compared with other whole-grain products.

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