It's been hypothesized that celiac disease has increased because of wheat breeding, which may have created wheat varieties that produce much more gluten than before. So researchers examined 30 varieties of wheat spanning 110 years, and they found no increase the concentration of gluten over time.

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It's been hypothesized that celiac disease has increased because of wheat breeding, which may have created wheat varieties that produce much more gluten than before. So researchers examined 30 varieties of wheat spanning 110 years, and they found no increase the concentration of gluten over time.