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If you take supplemental iron for an extended period can your body cease to absorb natural iron?
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Dr. Robert Kwok
Pediatrics
In brief: No
A person absorbs iron from foods and oral iron supplements because human bodies require iron.
If he is low in iron, his body will improve its absorption of iron. If he has plenty of iron, his body won't absorb as much iron. But, he will not stop absorbing iron. That means he can get iron overload by taking too high a dose of iron supplements. Iron overload damages the liver.

In brief: No
A person absorbs iron from foods and oral iron supplements because human bodies require iron.
If he is low in iron, his body will improve its absorption of iron. If he has plenty of iron, his body won't absorb as much iron. But, he will not stop absorbing iron. That means he can get iron overload by taking too high a dose of iron supplements. Iron overload damages the liver.
Dr. Robert Kwok
Dr. Robert Kwok
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