Peanut Allergies on the Decline: New Research Shows Introduction of Peanut Products to Infants Reduces Allergy Risk
A decade after a landmark study proved that feeding peanut products to young babies could prevent development of life-threatening allergies, new research finds the change has made a big difference in the real world. According to a study published in the medical journal Pediatrics, the rate of peanut allergies in children ages 0 to 3 fell by more than 27% after guidance for high-risk kids was first issued in 2015, and by more than 40% after the recommendations were expanded in 2017.
Understanding the Impact of Early Introduction of Peanut Products
Dr. David Hill, an allergist and researcher at Children’s Hospital of Philadelphia, and author of the study, analyzed electronic health records from dozens of pediatric practices to track diagnoses of food allergies in young children before, during, and after the guidelines were issued. The results show that about 60,000 children have avoided food allergies since 2015, including 40,000 children who otherwise would have developed peanut allergies.
Peanut allergy is caused when the body’s immune system mistakenly identifies proteins in peanuts as harmful and releases chemicals that trigger allergic symptoms, including hives, respiratory symptoms, and sometimes life-threatening anaphylaxis. The introduction of peanut products in infancy has been shown to reduce the future risk of developing food allergies by more than 80%, with later analysis showing that the protection persists in about 70% of kids into adolescence.
Guidelines and Recommendations for Parents
The study emphasizes the current guidance, updated in 2021, which calls for introducing peanuts and other major food allergens between four and six months, without prior screening or testing. Parents should consult their pediatricians about any questions, and introduce small amounts of peanut butter, milk-based yogurt, soy-based yogurts, and tree butters to allow the immune system exposure to these allergenic foods in a safe way.
Tiffany Leon, 36, a Maryland registered dietician and director at Food Allergy Research & Education (FARE), introduced peanuts and other allergens early to her own sons, James, 4, and Cameron, 2. As a dietician, Leon practices evidence-based recommendations and follows the new guidelines, which have been shown to reduce the incidence and prevalence of peanut allergy nationwide.
Advocates for the 33 million people in the U.S. with food allergies welcome signs that early introduction of peanut products is catching on. Sung Poblete, chief executive of FARE, said, “This research reinforces what we already know and underscores a meaningful opportunity to reduce the incidence and prevalence of peanut allergy nationwide.”
Conclusion and Next Steps
The new research offers promising evidence that early allergen introduction is not only being adopted but may be making a measurable impact. While there is still more work to be done, the study shows that the introduction of peanut products to infants can reduce the risk of developing peanut allergies. Parents and healthcare professionals can work together to implement these guidelines and reduce the incidence of food allergies.
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