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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The Salt

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

Doctors have other ways to explain why wheat makes some people sick, like the hygiene hypothesis.

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French Laundry pastry chef Lena Kwak with the gluten-free flour she developed.

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