Causes:
A food allergy occurs when there is an adverse reaction from eating a food. The reaction may be caused by a protein, starch, or other food component, or by a contaminant found in the food (colourings, preservatives, flavour enhancers, et cetera).
Some of the most common allergenic foods include: chocolate, dairy products, eggs, shellfish, tree nuts (almonds, pecans, walnuts), strawberries, and wheat. It is not known why some people are allergic to certain substances; however, allergies tend to run in families.
In addition, a number of theories hold that babies who are not breastfed are most likely to develop allergies. Emotional causes, such as stress and anger, are frequently contributing factors, especially if your immune system is not functioning properly.
What to Expect:
Food allergies and sensitivities can lead to anxiety and panic attacks. If this is a concern, track ingested foods and anxiety attacks to determine a correlation.