If there is a positive family history for food allergies, then the first prevention steps should take place at birth.
As breast feeding is generally protective of allergy, the longer nursing can continue the better. Afterwards, efforts should be made to wean/supplement with extensively hydrolyzed hypoallergenic protein hydrolysate. Most importantly, the infant should have at least a six month delay in consuming solid foods; should be between six and 12 months old before consuming cow’s milk and dairy and products; be between 12-24 months old before being offered eggs, and be between 24-28 months of age before peanut, tree nut, and seafood is introduced.