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How can consuming large quantities of fortified cereals be harmful?

In the mid-20th century, public health officials fortified cereals in response to widespread niacin deficiency caused by the modernized grain-milling process. The government mobilized bread and cereal manufacturers to start adding niacin, other B vitamins and some minerals to their products. Today, scientists are grappling with the possibility that cereal fortification has gone too far. The FDA has found that fortified cereal labels often underestimate nutrient content. Moreover, men tend to serve themselves over 250 percent more cereal than the recommended 30 gram serving size -- and women over 180 percent more -- upping some vitamin intakes by as much as 400 percent of the daily value. Such excessive intake puts consumers at risk of far exceeding toxicity limits for a number of nutrients, including folate and iron. 

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.