What's the difference between a food allergy and a food intolerance?
A food allergy is an immune system response to a food that the body mistakenly believes is harmful. Allergic symptoms can affect the respiratory system, gastrointestinal tract, skin and/or cardiovascular system. Reactions can be deadly. A food intolerance is a reaction that, unlike food allergy, doesn’t involve the immune system. Instead, it involves the digestive system, and the body simply lacks the mechanism or enzyme needed to digest and process a particular food properly.