Breastmilk from a Bottle and Obesity Risk

As a new parent you can go no longer than 24 hours without hearing the phrase “Breast is Best.” I know this to be true because I became a parent in June of this year. In the hospital we were offered consults with lactation and had no less than six posters in our room touting the benefits of breastfeeding. As a PhD student I was intrigued by the literature behind these recommendations and eagerly spent multiple late night nursing sessions on my iPad reading the latest research. What I found were some studies finding associations with reduced risk of obesity, and others failing to find this same association (literature). Overall, it was concluded in the previous review that breastfeeding was associated with a reduced risk of obesity.

While this was great news, I could not help but question; was this association because of breastmilk or mode of delivery? Bottle feeding is typically associated with formula feeding but a growing number of women have begun pumping their breastmilk after returning to work or in cases of pre-term birth and latch issues.

Could bottle feeding breastmilk still ameliorate the risk of obesity later in life?

I was not the first person to raise this question which has been addressed here, here, here, and here. Overall the consensus seems to be that early bottle feeding, of breastmilk or formula, is associated with an increased risk for excess weight gain and poor self regulation. Exclusively feeding expressed milk is also associated with early cessation of breast-milk feeding.

So this leads to the inevitable question; what is a mother to do?

While the literature is still unclear if bottled breastmilk can fight obesity risk, it is clear the breastmilk has multiple other benefits according to the American Academy of Pediatrics and should be offered when possible. So to those mothers who pump a little, a lot, or all the time, I say pump on ladies!

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