Proteins ingested by mother can appear in the breast milk. There is well known disease in breast fed babies called eosinophilic colitis, which causes eosinophilic infiltration in the large intestine of the babies and clinically presents as rectal bleeding. The therapy is very simple: the mother stops ingesting cow milk and cow milk products and the babies do not have bleeding and they are completely well. Based on this clinical syndrome, the same possibility exists for the presence of gluten peptides in Human milk. Studies on this have been done by Dr. Reichelt.

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