Current NHS guidance is clear: common allergens should be introduced from around six months of age, not avoided. Delaying their introduction beyond six to twelve months may actually increase the risk of allergy.
How to introduce allergens
One at a time, in small amounts. A quarter teaspoon of smooth peanut butter mixed into porridge. A tiny bit of well-cooked scrambled egg. Wait a couple of days before trying the next new allergen. Once introduced without reaction, keep offering that food regularly - continued exposure builds tolerance.
Signs of a reaction
Usually within minutes, sometimes up to two hours. Swollen lips or face, red itchy eyes, wheezing, a red itchy rash or hives, vomiting, tummy pain. Most reactions are mild. In rare cases, anaphylaxis can occur - breathing difficulties, swollen tongue/throat, collapse. Call 999 immediately.
Higher risk babies
Babies with existing eczema or a family history of allergies are at higher risk. If your baby has severe eczema, speak to your GP before introducing allergens - they may want a more structured approach.