in adults the most common foods that cause allergic reactions are shellfish such as shrimp crayfish lobster and crab; nuts from trees such as walnuts; fish; eggs; and peanuts a legume that is one of the chief foods that cause serious anaphylactic reactions. in highly allergic people even minuscule amounts of a food allergen (for example 1/44 000 of a peanut kernel) can evoke an allergic reaction. less sensitive people however may be able to tolerate small amounts of a food to which they are allergic. in children the pattern is somewhat different from adults and the most common foods that cause allergic reactions are eggs milk peanuts and fruits particularly tomatoes and strawberries. children sometimes outgrow their allergies but adults usually do not lose theirs. also children are more likely to outgrow allergies to cow's milk or soy formula than allergies to peanuts fish or shrimp. adults and children tend to react to those foods they eat more often. for example in japan allergy to rice and in scandinavia allergy to codfish is more common than elsewhere.
what are the most common food allergies?