Is blood captivating because of the iron surrounded by it?... save, why?

my little brother asked me this and i really didn't know and it was a unbelievably smart question for someone his age, so i granted to post this question. please with the sole purpose real answers, nil stupid.

Answer:
Only metallic iron is magnetic. Iron compounds are not. Hemoglobin contains iron within chemical combination.
Extra information you need to know -- Magneto analysis has no effect on the body as metallic iron does not exist surrounded by the body anywhere. However iron accidentally swallowed or pushed up the nose or inside the ear(mostly among kids) can be pulled out using a magnet.
The iron compounds within blood are nonpolar thus not making it magnetic.
No, the iron within our bodies is not magnetic, it is in truth the O2 (oxygen) that is carried by the red blood cell which is paramagnetic in temperament and allows for blood to be detected during an MRI (magnetic resonance imaging).
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