Hussein's handwritten "Allahu Akbar, " or "God Is Great, " was replaced by the same phrase printed in green but in different calligraphy.

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One captivating cameo created in the U.S. around 1890 shows the face of a follower of Bacchus, the Roman god of wine and intoxication, surrounded by a rich harvest depicted with pearls and green leaves.

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"Many physicians would roll their eyes and say, 'God, another crazy person with food sensitivities, ' " says Peter Green, director of the Celiac Disease Center at Columbia University and a co-author of the proposal.

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