If we have metals like iron and zinc in our blood, why doesn't that set off metal detectors?

Is it too small an amount of metal? Or is it because it's tiny particles of it instead of a big chunk?

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Maybe doesn't have all the properties of 'metal' in its common form as appearing outside the body? 🤔

BlueMetalChick · 26-30, F

@Andrew19EightyFive likely true, probably lacking metallic bonds.