STEPS IN IRON ABSORPTION

• 1) IRON IN HEME IS ABSORBED DIRECTLY AND THEN THE IRON IS RELEASED FROM THE HEME INSIDE THE CELL AND IS COMBINED WITH NONHEME IRON.

• 2) NONHEME IRON BOUND TO COMPONENTS OF FOOD MUST BE LIBERATED ENZYMATICALLY. MANY FACTORS INFLUENCE THE BIOAVAILABILITY OF IRON.

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