You've seen the funny scenes in movies when somebody eats a peanut and blows up like a giant red balloon. Needless to say, you don't want to be that person. Once you are diagnosed with a food allergy, the most important thing to do is read labels to make sure that no traces of the harmful ingredient are present in any food you consume

An allergy is actually a communication problem with your body’s immune system. It means that your immune system, which usually fights off harmful substances like germs and viruses, thinks something harmless and tasty is actually harmful. Imagine you're in your bedroom late at night and your little sister comes in and spooks you. At first you might be confused, and think she is someone else. Maybe you will scream, but eventually you'll recognize your sister and relax. This is a lot like what happens in your body if you are allergic to something. The only problem with an allergy is your immune system never recognizes the harmless substance, AKA "your sister."
Common allergies are to eggs, peanuts and nuts, chocolate, milk and many other nutritious foods.

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Introduction
Diabetic
Lactose Intolerance
Gluten-Free
Allergies