Let’s Clear This Up: The Role of Eczema in Food Allergy Risk
If your baby has eczema, chances are this thought has crossed your mind: “Should I wait to introduce peanut and other common allergens?”
You’re not alone. Eczema can make parents understandably cautious about anything that feels like it could potentially exacerbate it, but here’s the part that often surprises families: While early and regular allergen consumption is now recommended for all babies regardless of risk factors, it’s especially important for babies with eczema.
That’s because babies with eczema are 6x more likely to develop food allergies, which makes early intervention even more important for preventing food allergies in the future. You’re probably wondering, why? Well if you’ve ever asked yourself…
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Why does eczema increase the risk of food allergy in babies?
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When should I introduce peanut and other allergens if my baby has eczema?
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Do I need allergy testing before giving peanut to a baby with eczema?
… then you’re in the right place! Let’s clear up the role of eczema in peanut and food allergy risk, and learn more about how parents can get proactive early on about prevention.
Why Does Eczema Increase the Risk of Food Allergy?
Eczema, also known as atopic dermatitis, is more than just dry, sensitive skin. It’s a condition where the skin barrier isn’t working as well as it should. Think of healthy skin like a protective wall. In babies with eczema, that wall has tiny cracks. Through those cracks, environmental allergens—including food proteins in dust or on hands—can enter the body through the skin. Babies with eczema are at higher risk for developing food allergies because their skin barrier is compromised.
Avoiding early oral exposure while allowing accidental early skin exposure—from food residue, hands, or “testing” allergens on the skin—can actually increase the risk of developing a food allergy. This is known as the dual-allergen exposure hypothesis and was first proposed by our co-founder Dr. Gideon Lack. Dr. Lack often explains it this way:
If someone knocks on your door in the middle of the day, you’re likely to greet them very differently than if that same person breaks in your window in the middle of the night. The body is more likely to see food proteins that enter the body through the skin, as opposed to the mouth, as an intruder that must be attacked. For many babies with eczema, early oral introduction of peanut (often with medical guidance) is especially important for allergy prevention. Eczema management is also key, so talk with your provider about products to keep the skin barrier moisturized and healthy to get eczema under control.
When should I introduce peanut and other allergens if my baby has eczema?
If your little one is considered “high risk” (severe eczema and/or an existing allergy), current American Academy of Pediatrics (AAP) guidelines recommend introducing peanut foods as early as 4-6 months, after consultation with a doctor and possible allergy testing. However, it’s important to start those conversations early so you don’t miss the magic window while waiting for an appointment. The AAP says the majority of babies that aren’t high-risk, can start peanut foods around 6 months at home, without evaluation from a doctor.
Do I need allergy testing before giving peanut foods to a baby with eczema?
There’s been conflicting guidance on allergy testing for babies with eczema. While the AAP and the National Institute of Allergy and Infectious Diseases recommend consultation with a doctor and possible allergy testing for high-risk infants, more recent 2021 consensus guidance from the leading allergy organizations in the U.S., UK and Canada recommend against testing because waiting for an appointment with an allergist can create a bottleneck, causing babies to miss the narrow window for prevention. It’s best to discuss with your healthcare provider and come up with a plan both of you are comfortable with—but again, start those conversations early so you have a plan in place before the 4-6 months window.
What the Research Shows
Our co-founder’s Dr. Gideon Lack’s groundbreaking LEAP Study (2015) forever changed how pediatricians think about early peanut and allergen introduction (and totally flipped former advice to avoid allergens in infancy on its head!). A 2025 study found that peanut allergies dropped by 43% since the guidelines—which were based on Dr. Lack’s research—were updated in 2017 to recommend early introduction and consistent, repeat exposure.
The LEAP trial focused specifically on infants at high risk for peanut allergy due to severe eczema. After testing to ensure a peanut allergy had not already developed, these babies were introduced to peanut early (between 4-11 months) and consumed it regularly through age 5.
The result? Children who ate peanut foods early and consistently had an over 80% reduction in peanut allergy risk compared to those who avoided it. A follow-up study by Dr. Lack (LEAP-Trio) followed the same cohort of kids from the original LEAP study into adolescence, and provided conclusive evidence that starting babies on peanut foods early and keeping them in the diet regularly until age five achieves long-term peanut allergy prevention.
While further research has found that early peanut introduction benefits all infants, babies with eczema are the ones that benefit most from early and ongoing exposure (simply because they have a higher chance of developing food allergies in the first place!).
Why Avoidance Isn’t the Safer Option
For years, parents were told to delay allergenic foods. We now know that approach may have unintentionally caused food allergy rates to soar: nut allergies tripled in the two plus decades since nuts were essentially banned from infant diets.
When peanut is avoided during infancy, especially in babies with eczema, the immune system misses the chance to learn that peanut protein is harmless. (This principle likely applies to other foods, particularly allergenic ones, as well.) Oral exposure helps promote what experts call oral tolerance—the immune system’s ability to recognize a food as harmless.
When peanut and other allergens show up regularly in the diet, the immune system learns, “This is normal. No need to react.” Without that consistent oral exposure, the immune system doesn’t get the same message.
So What Should Parents of Babies With Eczema Do?
Starting solids and beginning a baby’s feeding journey is anxiety-inducing enough for any new parent. Add in dealing with eczema and the risk of food allergies and your head is (understandably) spinning. Remember: you’re doing what’s best for your little one by getting a head start on prevention, and they will thank you later!
If your baby has severe eczema, talk to your pediatrician early (think: 2-3 month mark). They may recommend testing before introduction at 4-6 months. But for most families, the guidelines recommend starting peanut foods and other allergens at home, around 6 months. The takeaway is not to delay out of fear, but rather lean into early, consistent exposure. It may feel counterintuitive, but waiting actually increases the risk of developing a food allergy. After initial introduction, try to continue incorporating peanut and other allergenic foods regularly, at least 2–3 times per week (learn more about what “often” really means).
Early & Often Made Easy
Your first thought might be: “ok, all sounds well and good…but how on earth do I give peanuts to an infant safely, much less all the tree nuts?!” Remember that whole nuts and thick nut butters are obvious choking hazards for babies and toddlers. That’s why parents of three Catherine and J.J. Jaxon teamed up with the very pediatric allergist who led the research, Dr. Lack (recently named to the TIME100 Health 2026 Pioneer list) to formulate yummy, melt-in-your-mouth Nutty Puffs that make following the latest guidelines a simple part of your routine. Nutty Puffs include the right amount of nut protein in a baby-friendly form, without sacrificing quality, taste or nutrition. They’re designed for babies starting solids and up, so big kids and beyond can enjoy them, too!
Making It Feel Manageable
For busy families, having simple and developmentally appropriate options (like Mission MightyMe’s Nutty Puffs) can make repeated nut exposure just another part of the family’s routine—and hopefully reduce some of the mental load so it feels doable instead of daunting. We believe feeding should be full of fun, not fear. That’s why we created Nutty Puffs: to make early and often easy and enjoyable for little ones and parents too!
