An FDA rule effective Aug. 5 states that foods may be labeled "gluten free" only if there's less than 20 parts per million of the protein. James Benet/iStockphoto hide caption

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Truth In Labeling: Celiac Community Cheers FDA Rule For Gluten Free
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About 40 years ago wheat breeders introduced new varieties of wheat that helped farmers increase their grain yields. But scientists say those varieties aren't linked to the rise in celiac disease. Karen Bleier/AFP/Getty Images hide caption

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Doctors Say Changes In Wheat Do Not Explain Rise Of Celiac Disease
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