What is blocking the iron, in tea/coffee?

Discussion in 'Coffee' started by Bluebell, Jul 29, 2013.

  1. Bluebell

    Bluebell Member

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    I had always heard it's the tannins in tea and coffee that do it.

    Does anyone know if Peat agrees with that?

    I guess having coca-cola when I eat liver is not going to cut it.
     
  2. jaguar43

    jaguar43 Member

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    also the magnesium
     
  3. Asimov

    Asimov Member

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    Caffeine has the ability to chelate iron on it's own. I have no clue what percentage iron blocking is from the caffeine in the coffee however.
     
  4. OP
    Bluebell

    Bluebell Member

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    It seems it's the polyphenols that block the iron, and tannins are one of those.
    http://journals.cambridge.org/download. ... 87924f0996

    Do you guys have any references for the caffeine and the magnesium blocking iron, I have not heard of that before?
     
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