What a new egg allergy study means for your baby’s first foods
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I asked Dr. Jaspreet Dhami to walk me through what the numbers actually mean for a parent standing in their kitchen with a spoon in one hand and a lot of anxiety in the other.
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I raised two kids without a single food allergy between them, and I still remember exactly what it felt like the first time I put a spoonful of egg in front of each one. My hand hovered over the bowl. I read the label on a jar of infant oatmeal three times before I mixed anything in. Feeding a baby is stressful enough without adding “possible allergic reaction” to the list of things you’re watching for over breakfast.
A friend of mine found that out the hard way. She fed her son eggs for the first time while the family was staying at a cabin in the woods with friends. Within minutes, his skin had broken out in a rash. One of the friends staying with them happened to be a nurse, and she was able to tell it wasn’t a dire situation. Still, my friend decided that the next new food would wait until they had cell service and weren’t three states from their pediatrician’s office.
That instinct to wait, to protect against the unknown, is exactly what a new study is asking parents to reconsider.
Published this month in JAMA Pediatrics, the study found that egg allergy rates in infants dropped from 9.2% to 7.6% after feeding guidelines shifted to recommend introducing egg around 6 months. For babies with eczema, who carry a higher baseline risk for food allergies, the drop was far bigger, from 34.6% down to 21.9%.
I asked Dr. Jaspreet Dhami, a board-certified allergist and immunologist at Latitude Food Allergy Care in the San Francisco Bay Area, to walk me through what those numbers actually mean for a parent standing in their kitchen with a spoon in one hand and a lot of anxiety in the other.
What early egg introduction actually looks like
“Egg around 6 months” sounds simple until you’re the one holding the spoon. Dr. Dhami’s advice is more precise than a taste test. She recommends starting with about a quarter teaspoon of well-cooked scrambled egg mixed into a food your baby already eats, then waiting ten minutes and watching for a reaction. If nothing happens, she says to move on to a full two-teaspoon serving and keep watching for two hours. After that first successful try, the food needs to become a regular part of the diet, not a one-time box to check.
“It’s important to incorporate egg into the diet two to three times a week to help the immune system maintain tolerance over time,” Dr. Dhami said.
Why the eczema numbers are so much bigger
The gap between the general population’s improvement and the eczema group’s improvement isn’t a coincidence. Dr. Dhami explained that in babies with eczema, a compromised skin barrier can become an allergen’s first point of contact with the body.
“In babies with eczema, often the first exposure to an allergen can be through the skin, due to a compromised skin barrier. This teaches the immune system to treat the allergen as a threat and mount an immune response,” she said. Feeding the allergen early and often, she explained, trains the gut to tolerate it instead, which lowers the odds the immune system learns the wrong lesson through the skin first.
I asked Dr. Dhami whether other factors, not just the guideline change, could explain the drop. She pushed back on that idea.
“If some unrelated factor were behind the overall drop, we’d expect it to affect all babies similarly, not concentrate so heavily in this one high-risk group,” she said. “That pattern points specifically to early introduction as the cause.”
Early introduction isn’t a guarantee, and that’s fine
It would be satisfying to report that egg allergy is now solved. It isn’t. “Early introduction remains our only evidence-based strategy for reducing the risk of developing severe, life-threatening food allergies, but it isn’t a guarantee that your baby will never develop a food allergy,” Dr. Dhami said.
What has changed is what happens next if your baby does develop one. Strict avoidance used to be the only option on the table. Dr. Dhami’s clinic treats patients from 8 months old through adulthood with oral immunotherapy, a treatment that involves giving a patient small amounts of an allergen over time to build tolerance. She says patients can be treated for one allergen or several at once, and most complete treatment in 8 to 9 months. At her clinic, the success rate for patients under four is 98%, and 94% of patients who start oral immunotherapy finish it.
“Many of these kids will never remember their life with a food allergy,” she said.
It’s not just egg
Egg gets the headline because this study focused on egg, but Dr. Dhami’s guidance covers the full list of major allergens. She recommends introducing all nine, peanut, tree nuts, wheat, egg, cow’s milk, soy, fish, shellfish, and sesame, between 4 and 6 months, whenever your baby is developmentally ready. Once a food has been introduced successfully, she says to keep offering it regularly rather than letting it drop out of rotation.
Do higher-risk babies need to see an allergist first?
If your baby has eczema or a sibling with food allergies, it’s reasonable to wonder whether home introduction is still the right call. Dr. Dhami’s answer is yes. “All infants benefit from early introduction, but this approach is particularly important for those at elevated risk, including babies with moderate to severe eczema or a family history of allergic conditions,” she said. Current guidelines are built around removing the barriers that used to keep families from introducing these foods early, not adding more of them.
She noted that first reactions at this age are almost always mild, usually hives or vomiting. If parents are nervous, she suggests starting with a very small amount and increasing it gradually with each offering, and looping in an allergist who specializes in food allergy if concerns come up along the way.
If you followed the old advice, you didn’t do anything wrong
For years, parents were told to delay allergens, sometimes well past a baby’s first birthday. A lot of parents whose kids went on to develop food allergies carry real guilt about that timeline. Dr. Dhami doesn’t think they should.
“I reassure my parents that they did their best and followed the best advice that was available to them at the time,” she said. “It’s also important to remember that food allergies occur due to several factors, and thankfully we now have treatment options available such as oral immunotherapy.”
Reaction versus normal first-food fussiness
Not every rash or refusal is a red flag. Dr. Dhami said redness around the mouth after a new food is often just skin irritation, not an allergic reaction, and it tends to clear up on its own. Citrus, tomatoes, strawberries, and other high-salicylate foods are common culprits for that kind of contact irritation.
A true allergic reaction shows up within minutes to two hours and can include hives or an episode of vomiting. What should send you straight to calling 911 is anything involving two or more body systems at once, or severe symptoms like trouble breathing, sudden limpness, unusual sleepiness, color changes in the skin or lips, or vomiting that won’t stop. Epinephrine is the first-line treatment for a severe reaction, which is part of why Dr. Dhami is such an advocate for early, well-monitored introduction rather than avoidance.
Why this matters to her, personally
Dr. Dhami’s focus on food allergy isn’t purely clinical. Her niece has severe food allergies, and she said that’s shaped how she talks to the families in her practice.
“I know how difficult food allergies can be to navigate, and I hope that patients and families know that there are treatment options beyond just avoiding the foods that they’re allergic to, so that they can live a life that is safer and freer,” she said.
My friend’s instinct to be more careful with the next new food wasn’t wrong. But the bigger lesson from this study, and from Dr. Dhami’s work, is that the caution most of us feel reaching for that spoon is worth pointing in a different direction, toward introducing early and often, rather than toward waiting.
Dr. Jaspreet Dhami is a board-certified allergist and immunologist at Latitude Food Allergy Care in the San Francisco Bay Area, where she treats food allergy patients from infancy through adulthood.
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