How many calories does the mom burn by nursing?

[Taedareth]

I am certain I once saw a rule of thumb about how many calories the mom expends per day by nursing a totally breastfed baby, per pound of baby's weight. But I've checked my Womanly Art of BFing book and can't find it. Does anyone know? Even just a ballpark would be helpful. Thanks!

[mikeandtoribaby]

I have read that you burn 500 calories

[RolliePollie]

20 cals for every 1 ounce of milk produced...


http://www.breastfeed-essentials.com...dvantages.html

[Taedareth]

Hmm... okay then does anyone know how many ounces of milk a baby drinks per day? Does it change depending on the baby's age?

Edit: Oh, here's some info about that 500 calories per day thing, from verybestbaby.com:
Nursing a baby requires about 500 calories a day above your pregnancy calorie requirement. For example, if you typically consumed 2,200 calories a day while you were pregnant, you should be eating about 2,700 calories while breastfeeding. You’ll need more than the extra 500 calories a day if you have a very large baby (who will need more milk) or if you’re feeding multiple babies.