Polyphenol-rich tea decreases iron absorption from fortified wheat bread in Senegalese mother-child pairs and bioavailability of ferrous fumarate is sharply lower in children.

In Senegalese women and children, herbal tea decreased FAFe from a wheat-based meal. The RBV of FeFum was low in children but not in their mothers. FAFe was modestly correlated in mother-child pairs, possibly due to shared genetic, epigenetic or environmental background.