• Question: why is poo brown

    Asked by 12fabenaichouche to Becky on 27 Jun 2013.
    • Photo: Rebecca Cook

      Rebecca Cook answered on 27 Jun 2013:

      Because poo contains a lot of dead red blood cells which are brown in colour. Red blood cells turn brown when they die which you have probably seen without realising it in an bruise a couple of days old.

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