One‑Third of Infants Previously Diagnosed with Peanut Allergy Pass Oral Food Challenge

In a recent Australian study, 35 % of 778 infants who had been diagnosed with peanut allergy failed to react during an oral food challenge, a test that administers up to 2,500 mg of peanut flour under medical supervision. The children, all under 12 months, had previously shown allergic symptoms and positive skin‑prick or blood tests. The challenge, conducted on average six months after diagnosis, revealed that a substantial proportion of infants’ peanut allergies resolve within the first year. Parents of these children were informed that their children no longer carried an allergy label and could safely reintroduce peanuts at home, eliminating the need for costly two‑year oral immunotherapy programs. The findings suggest that routine oral food challenges could prevent unnecessary treatment and reduce the long‑term risk of developing a true peanut allergy.