I believe the 20  calorie count is an average. I'm sure there is some 
variation  person to person,  also time of day, age of baby (you know it 
turns into water at 6, 9 or 12 mo LOL) etc.  I'm sure at some point in the 
history of formula someone collected a lot of breastmilk and figured it out. 
Pat in SNJ


>   My question is how are you coming up with the caloric content of
> breastmilk as my understanding is that it is not a set number...
>
>  together in health,
>
>   Patricia, RLC, IBCLC, CST
>
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