Food intolerance or food sensitivity is a negative reaction to a food that may or may not be related to the immune system or to food poisoning. It may be caused by the absence of specific enzymes which are needed to digest a food substance or to the body’s responses to certain food chemicals both natural and artificial.
Symptoms of food intolerance vary greatly and may be mistaken for the symptoms of an allergy. Food allergies or food intolerances affect nearly everyone at some point, but only about three percent of children have clinically proven allergic reactions to food and only about one percent of adults have food allergies.
Most Common Allergies
In adults, the most common foods to cause allergic reactions include shellfish such as shrimp, crayfish, lobster, and crab; peanuts, eggs, tree nuts, and fish.