A person will never know if they are allergic to a certain type of food unless they have eaten the food allergen itself. It takes a certain amount of food for the reaction to take place and trigger a symptom.
Food allergy is a serious condition that can threaten the lives of people especially students at school. Food allergy also known as food hypersensitivity is the immune system's reaction to the types of food containing protein or other ingredients. Thus, a certified allergist is needed to diagnose food allergy.
Some people are not aware that they have food allergy. It can be difficult to diagnose especially if allergic reactions are not apparent before. Symptoms of food allergy only appear if you exceed the tolerable amount of foods you are allergic to.