Which foods cause food allergy?

The eight most common food allergens—milk, eggs, peanuts, tree nuts, soy, wheat, fish, and crustacean shellfish—cause most food allergic reactions. However, many other foods have been identified as allergens for some people, such as certain fruits or vegetables and seeds. Most children with food allergies to milk, eggs, soy, and wheat will outgrow their allergy. However, allergy to peanuts, tree nuts, and fish usually persists. Shellfish allergies often develop during later childhood or adulthood, and the most common food allergy among adults is shellfish. Peanuts and tree nuts account for most of the severe cases of food allergy.