Many health benefits mentioned for the apple fruit; however, there are two allergy types to the apple fruit. The first allergy type is called birch-apple syndrome. It has been found that people who are allergic to birch pollen, have allergy to apples too. The reason is that the protein in apple fruit is alike the birch pollen protein.
These people may have allergies to other fruits, vegetables and nuts. When these people eat apples, the allergy symptoms appear after 5-15 minutes. The symptoms are itching and swollen throat, mouth and tongue. Those who have this type of apple allergy can eat the cooked and heated apple fruit products because the allergen does not survive after heating. This allergy type is mostly traced in adults and females.
The second allergy type happens to those who are allergic to the fruits of Rosaceae group some of which are strawberry, almond, apricot, peach, pear, and plum. The symptoms of this allergy type can be more harsh and life threatening. Some of these symptoms are rash, asthma, abdominal pain and urticaria. The apple fruit protein that cause allergy does not break down with heating and cooking. So, the people who are prone to this allergy type cannot eat both cooked and raw apples and should avoid all apple products even shampoos, shower gels and soaps.
The quantity of allergen may differ depending on the apple kind, the fruit maturity, and storage situations. The fresh out of tree apples have the highest allergic amount; however, in birch pollen allergy the allergic amount increases with the storage length.