In France, at the age of 5, 6% of children have at least one allergy. Milk is the main allergen (3.4%), followed by egg and peanut (1%).
So, is it possible to avoid allergies? Not everyone, but good practices can be put in place. Most early childhood allergies will be able to heal naturally, this is particularly the case for eggs and milk. This is less true for peanuts and tree nuts. If the allergy persists, including specific immunotherapy.