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Foods do not often cause asthma symptoms. If you are allergic to a certain food, you will usually feel symptoms soon after eating it. The most common food allergens are:
Sulphites are often added to foods to preserve them. Sulphites can cause an allergic reaction in some people. Sulphites are commonly found in foods such as:
If you have had an allergic reaction to a food, it is important to avoid that food. An allergic reaction can even occur to a very small amount of that food.