In most cases, a child will outgrow an allergy to milk and eggs in early childhood.
However, severe allergies will require long-term avoidance of the foods. Children more rarely outgrow allergies to peanuts, nuts, fish and seafood. Molecular allergy can help us a lot gauging the risk of severe allergic reaction and the likely course overtime of a particular food allergy. Whereas science had suggested a decrease in respiratory allergy symptoms over time, recent research seems to suggest otherwise. It is not uncommon to see the development of allergic disease even in individuals aged 30 and over.