Absorption of vitamins and minerals - Iron
3 important questions on Absorption of vitamins and minerals - Iron
How is iron absorbed?
1. Receptors for protein bound iron (heme/lactoferrin)
2. Divalent metal transporter (DMT-1), iron H+ symporter
2. Divalent metal transporter (DMT-1), iron H+ symporter
How is iron excreted in the body?
There are no specific mechanisms for iron excretion, but when iron stores are high the liver secretes hepcidin which downregulates DMT-1 and transferrin receptors
What happens in iron deficiency?
Anemia can be caused by malabsorption, dietary deficiency, or excessive loss of iron
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