The Impact Of Food Allergy By Chef Williams What in the world is food allergy you may ask Food allergy is An unpleasant or dangerous immune system reaction after a certain food is eaten.Talking of food allergies and it's reaction'- you might also mistake food intolerance for food allergy. The difference between food allergy and food intolerance. Physical reactions to certain foods are common, but most are caused by a food intolerance rather than a food allergy. A food intolerance can cause some of the same signs and symptoms as a food allergy, so people often confuse the two. A true food allergy causes an immune system reaction that affects numerous organs in the body. It can cause a range of symptoms. In some cases, an allergic food reaction can be severe or life-threatening. In contrast, food intolerance symptoms are generally less serious and often limited to digestive problems. If you have a food intolerance, you may be able to eat sm...