Food allergy is an abnormal response to a food triggered by your body’s immune system. Allergic reactions to food can sometimes cause serious illness or death. Tree nuts and peanuts are the leading causes of deadly allergic reactions called anaphylaxis.
In adults, the foods that most often trigger allergic reactions include:
fish and shellfish, such as: shrimp, lobster or crab
tree nuts, such as: walnuts
Sometimes a reaction to food is not an allergy. It is often to a reaction quote on quote “food intolerance”. Your immune system does not cause the symptoms of food intolerance; however these symptoms can look and feel like those of a food allergy.