How many calories do you need to replace a pint of blood?

09 November 2008

Question

How many calories do you need to replace the tissue lost when you give a pint of blood away?

Answer

We put this to Professor Adrian Newland:

Adrian - About 650 calories, which I'm reliably informed is 3 Mars bars.

Chris - Why would it take energy to replace blood? Adrian - Anything that develops tissue requires energy.

Chris - So what you're saying is you just need to put the energy back in.

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