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.
One of the biggest markets where freelance work is done is in the field of designing and illustration. Defined as "doing a graphic design jobs for businesses to make their products sell via direct marketing," designing is becoming one of the growing markets where designers earn income by doing freelance work.