NURSING ANM AND GNM

Detailed explanation-1: -Dual isotope studies were performed in iron replete human subjects to evaluate the effect of coffee on nonheme iron absorption. A cup of coffee reduced iron absorption from a hamburger meal by 39% as compared to a 64% decrease with tea, which is known to be a potent inhibitor of iron absorption.

Detailed explanation-2: -It is accepted that tannins reduce iron availability before absorption through the formation of insoluble antinutritional-mineral complexes (14), and reported exacerbation of IDA by foods high in phytates or tannins is common (15–17).