You will be surprised to know how certain everyday foods can trigger a reaction in the body, ranging from a mild irritation to a more serious one requiring immediate medical attention, and that quite a large number of people suffer from food allergy. This generally happens when a certain component in the food is perceived to be harmful by your immune system, which then sets off an alarm within your body.

• Swelling: The most common reaction is swelling of the lips, or other parts of your face including eyelids, cheeks and tongue.