Baby Allergies and Intolerances While Breastfeeding

We are dairy free. We have been dairy free since he was about 4 weeks old. His main symptoms were colicky, uncontrolled crying, not sleeping, gas, and stomach pain. Going dairy free was hard at first and it took about a month to see relief but it was worth it. He was a different baby. I wish I had done it sooner and I honestly don’t miss dairy. I’ve gotten use to living with substitutions and I really like a lot of the “cheeses” and dairy free alternatives I use. My favorites being Follow Your Heart Smoked Gouda Slices, So Delicious Mozzarella and Jack shreds, So Delicious yogurts, Toffuti Sour Cream, Kite Hill Cream Cheese, So Delicious Ice Creams and Ice Cream Sandwiches, and Almond and Coconut milk.

A few weeks ago I had traveled to my sisters for the weekend. While I was there I ate corn. I never eat corn because I don’t care for it. I didn’t think anything of it then. Baby was miserable, screaming and bearing down turning bright red all day Sunday and Monday. Sunday night he tried to push out a poop for almost an hour and all that came out was blood and mucus. I called the doctor Monday and they told me to come in with a poop sample. I brought the mucus and blood one from Sunday night. Luckily it was still in the trash. It tested positive for blood. They said it was Allergic Colitis and since I was dairy free already with no soy reactions they told me to cut out corn. He also called a GI doctor at Boston Children’s Hospital and he confirmed that. I thought to myself… I never eat corn…. then I remembered my sisters house. I ate corn. It all made sense when I started thinking about it. He always got fussy after tacos. I though it was the spice, but it was the corn tortillas. He got fussy after I went to my sister in laws but I ate corn tortilla chips… it was all making sense. They told me that I should continue breastfeeding and watching what I eat closely and that he should feel better by the end of the week. He did. I gave him some Gripe Water to soothe his stomach for a few weeks after which seemed to help too.

I thought dairy was in everything, nope, CORN is in everything!

Possible signs of food allergy

A small percentage of breastfeeding mothers notice an obvious difference in their baby’s behavior and/or health when they eat certain foods. Cow’s milk products are the most common problem foods and the only foods conclusively linked by research to fussiness/gassiness in babies, but some babies do react to other foods. Food sensitivities in breastfed babies are not nearly as common as many breastfeeding mothers have been led to think, however.

If a breastfed baby is sensitive to a particular food, then he may be fussy after feedings, cry inconsolably for long periods, or sleep little and wake suddenly with obvious discomfort. There may be a family history of allergies. Other signs of a food allergy may include: rash, hives, eczema, sore bottom, dry skin; wheezing or asthma; congestion or cold-like symptoms; red, itchy eyes; ear infections; irritability, fussiness, colic; intestinal upsets, vomiting, constipation and/or diarrhea, or green stools with mucus or blood.

The severity of a food reaction is generally related to the degree of baby’s sensitivity and to the amount of the problem food that mom ate—the more food eaten and the greater baby’s sensitivity, the more severe the reaction. Food reactions may occur within minutes, but symptoms in breastfed babies more commonly show up 4-24 hours after exposure. If baby has an acute reaction to a new food, or to a food that mom ate a large amount of, then he will probably be back to normal within a couple of hours. If baby is sensitive to a food that mom eats frequently, symptoms may be ongoing.*

The most common allergens

-cow’s milk products






What you need to know if your baby has a corn allergy

◦ Avoid every food that has the word “corn” (cornmeal, corn starch, corn syrup, etc.) anywhere on the label

◦ Some alcoholic beverages (ale, beer, gin, whiskey, vodka, wine) may contain corn.

◦ Battered, bread-crumbed and coated meat and seafood dishes may contain corn

◦ Cereals, cakes, puddings, breads may contain cornmeal

◦ Grits is a corn product

◦ Vegetable oil may contain corn oil

◦ Food-thickeners (used in frostings, icings, gravies, sauces, dressings, marinades) may contain corn starch

◦ Corn starch is used on cooking containers, plastic bags, baking sheets to prevent food from sticking to them

◦ Glue contains corn starch

◦ Dextrose and glucose are corn sugar and corn syrup, respectively, used in soft drinks, gums, processed meats and fish, ice cream

◦ Corn sugar is present in infant formula!!!

◦ Check what the sugar and the vinegar you use at home are made from. Many contain corn.

◦ Many cold medicines, vitamins, and mineral pills contain corn derivatives


Although my diet has become very tricky, it is all for the health and happiness of my baby. This journey has actually made me a healthier eater!


6 thoughts on “Baby Allergies and Intolerances While Breastfeeding

  1. We’re currently on a journey to a healthier lifestyle. My kids aren’t allergic to anything BUT I think that it wouldn’t harm them to change their diet a little. I’ve laid off the carbs and sugar myself, and I don’t advise my kids to do the same, although they’re now more conscious at how much sugar and carbs they consume just by observing me haha. And I think that’s a good thing.

    Liked by 1 person

  2. That picture at the top 😂😂😂😂😂 so accurate. This is a great post about what to watch out for while pregnant or nursing. A lot of moms are unaware of these things.

    Liked by 1 person

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