Did the US get peanut allergy prevention wrong for years?

Decades of advice to avoid infant peanuts have been overturned by new evidence. Large studies, including a 2025 analysis of 120,000 children, show early peanut introduction significantly lowers allergy risk. The landmark LEAP trial in 2015 demonstrated an 81% reduction in peanut allergy for high-risk infants who consumed peanuts early, with protection lasting into adolescence.

Did the US get peanut allergy prevention wrong for years?
Decades of advice to avoid infant peanuts have been overturned by new evidence. Large studies, including a 2025 analysis of 120,000 children, show early peanut introduction significantly lowers allergy risk. The landmark LEAP trial in 2015 demonstrated an 81% reduction in peanut allergy for high-risk infants who consumed peanuts early, with protection lasting into adolescence.