New research suggests that introducing peanut butter to infants can reduce the risk of developing a peanut allergy in the future.

New Evidence Supports Early Peanut Butter Introduction to Reduce Peanut Allergy Risk

Recent research indicates that introducing smooth peanut butter to children during infancy and early childhood can significantly reduce their risk of developing a peanut allergy later in life. Compared to avoiding peanuts altogether, starting peanut consumption as early as around 4 months of age and continuing regularly until around 5 years old was associated with a remarkable 71% reduction in peanut allergy rates among adolescents in the United Kingdom, according to a study published in the journal NEJM Evidence¹.

The findings align with the practice in Israel, where infants are exposed to peanuts early, and peanut allergies rarely emerge during adolescence or adulthood. This suggests that the protective effect of early peanut exposure is long-lasting. The phenomenon is rooted in immunology and known as oral tolerance induction. Essentially, when young mice or other experimental animals are fed foods like egg, milk, or peanut, they are less likely to develop allergies later in life¹.

Previously, the American Academy of Pediatrics recommended delaying peanut introduction until age 3, but that recommendation changed in 2008. In 2019, the AAP updated its guidance, emphasizing that early introduction of allergenic foods, including peanuts, may prevent allergies rather than cause them¹.

1. Early Introduction: Children can be safely introduced to peanut-containing foods starting around 6 months of age if they have no eczema or food allergies. Consult with a pediatrician for personalized advice

2. **Lasting Protection:** Early exposure to peanut products provides lasting protection.

Even if a child stops consuming peanuts regularly after age 5, the reduced risk persists.

3. **Common Allergy:** Peanut allergies affect nearly 2% of adults and children in the United States and can be life-threatening. Preventive measures can make a significant difference in reducing this risk⁴.