• Question: How many red blood cells do we have in our body?

    Asked by Poppie to Andy, Duane, Giovanna, Katie, Theresia on 12 Nov 2014.
    • Photo: Duane Mellor

      Duane Mellor answered on 12 Nov 2014:

      I think about 5 million per ml of blood and if you have about 4 litres in a teenager and 5.5 litres in an adult that would be 20-27.5 billion (20-28,000,000,000 ish)

    • Photo: Andrew Philp

      Andrew Philp answered on 12 Nov 2014:

      Cant add anything more to Duane’s cool calculation other than A LOT!!!

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