Why does a diet high in iron decrease the absorption of copper?
A)Copper and iron bind together to form insoluble complexes.
B)Copper depends upon magnesium for transport and iron binds magnesium.
C)Copper is oxidized to its less absorbable cupric form by iron.
D)Copper and iron compete for the same transport proteins.

Question

Quizplus · Accepted Answer

Copper and iron both require the same transport proteins for absorption. Therefore, an excess of iron in the diet can lead to competition for these transport proteins, resulting in decreased absorption of copper.

Why Does a Diet High in Iron Decrease the Absorption