Check food labels carefully

Do an elimination dieting if you suspect that you are allergic to foods. Do this
gradually by eliminating each food you usually eat for a period of 2 to 4 weeks
to see changes. The process will be repeated in an opposite manner by
introducing again the eliminated food to see if allergic symptoms will be
manifested.

The best way to deal with food allergy is to avoid its triggering factor. Check
food labels carefully for additives that can cause you allergic reactions. If you
suspect that a specific additive can cause you the allergy, avoid those as much
as you can. Consider fresh and unprocessed foods.

Monitor your food intake by keeping a diary. List down all your activities
including all the foods you eat. Take note if when your allergies begin to
show. It may establish a connection between your allergic reactions and a
particular food, or something like scents, soap, cosmetics, clothing that you
wear or your pet’s fur.