Check out this list of the top foods people are allergic to:

Allergicfoods

1) Wheat

2) Gluten – a protein commonly found in wheat, but also in barley, rye, and some grains.

3) Soy

4) Eggs

5) Peanuts

6) Tree nuts (walnuts, almonds, cashews, pecans, etc.)

7) Shellfish (lobster, shrimp, crab, and mussels

8) Dairy