Is there anything breastmilk can’t do?!
In this article we’ll cover exactly how breastfeeding can help with infant allergies, including:
The link between breastfeeding and allergies
How formula fits into the equation
Plus, the new guidelines for allergen introduction
How Breastfeeding Can Help Prevent Infant Allergies
Fun fact: Your breastmilk takes on the flavors of the foods you eat, from curry to licorice to garlic. (source)
But breastmilk doesn’t just taste like the foods you consume—the specific foods you consume can help protect your nursing baby against food allergies. According to a study published in the Journal of the American Medical Association Pediatrics, babies who were exclusively breastfed were 54 percent less likely to develop eczema and allergies during their teen years. (source)
This is a big revelation, but let’s back up just a bit.
The old guidelines
In the past, experts told nursing mothers to avoid highly allergenic foods (such as peanut butter) during pregnancy. They thought consuming an allergenic food would expose baby to the allergen, increasing baby’s risk of developing allergies later in life.
What current research says
However, the most current research illustrates that this just isn’t the case. There is no known link between maternal exclusion diets (i.e. abstaining from highly allergenic foods) and the prevention of infant allergies. (source)
In fact, it’s quite the opposite: A mother who consumes allergenic foods may actually help protect her newborn from infant allergies. A 2017 study, published in the Journal of Experimental Medicine, revealed that breastmilk from nursing mice (who ate egg) protected baby mice from developing egg allergies. It appears that the mother’s body passes the right antibodies to baby through her milk. (source)
The new guidelines
Given this information, the AAP, AAAI, and NIH have all included addenda to their official guidelines stating early introduction provides your baby with the ability to create antibodies that prevent infant allergies, instead of triggering immune responses in the presence of egg, nut, or dairy proteins.
While breastfeeding is a great first step, there are also new programs, like Ready, Set, Food!, specifically designed to facilitate early allergy introduction safely. (More on that below.)
How to Follow the New Guidelines on Infant Allergies While Breastfeeding
Even if you exclusively breastfeed, you’ll still need to introduce allergens to baby directly at some point—this generally happens around six months, when baby is ready to eat solids.
But will early introduction affect your breastfeeding relationship?
According to the UK-based LEAP study, lactation consultants promote both breastfeeding and early allergen introduction. (source) Early introduction works with breastfeeding to prevent infant allergies.
Introducing foods like peanut butter or eggs won’t affect your breastfeeding relationship. Remember: Food before one is just for fun. Baby will still get most of his/her nutrients from your breast milk.
Are there programs that can help?
Programs like Ready, Set, Food! can help all parents, whether breast- or formula-feeding, safely and effectively introduce the top three allergens (cow’s milk, peanuts, and eggs) to babies.
I love this program because it takes the confusion out of the process. Rather than introduce a solid egg or peanut butter to a baby who is just beginning to eat solids, you simply mix pre-measured powder into baby’s bottle (breast milk or formula).
Mamas who exclusively breastfeed (and want to continue to do so) may find this program particularly appealing, because they can continue to exclusively breastfeed—no solid foods are introduced.
What About Formula? Can It Help Prevent Infant Allergies?
Some studies show that certain types of formula, specifically partially hydrolyzed formulas, may help prevent eczema in babies. (source) Since babies with eczema are more likely to develop infant allergies, it’s possible there could be a link. (source)
Note: If you suspect your baby is at risk for developing infant allergies (due to family history or severe eczema), you might consider using donor milk. In the study discussed above, even the baby mice fed breastmilk from a donor mother mouse were less likely to develop infant allergies. It would make sense that these benefits would translate to human babies, too. (source)