The body absorbs various forms of iron at different
rates. When iron is bounded within a heme group (a body
chemical group), it is known as heme iron and is found
in meat, fish, poultry and seafood. It is more readily
absorbed than the non-heme form of iron which is mostly
found in plant sources.
Generally, non-heme iron is absorbed
at a low rate. But the presence of ascorbic acid (vitamin
C) or heme-iron can increase the absorption by maintaining
non-heme iron in the more soluble ferrous iron form
(FE++). Absorption of iron can also be inhibited by
other factors such as excessive fibre intake and drinking
beverages containing tannin at the same meal.
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