With awareness of food allergies and intolerances increasing, the National Restaurant Association recognizes that this is an important issue for the nation's nearly 1 million restaurants. About one in 25 Americans report that they suffer from a food allergy, according to the Food Allergy & Anaphylaxis Network.
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, does not 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.
The Food & Drug Administration says more than 160 food items can cause allergic reactions but that these eight foods account for about 90 percent of all allergic reactions:
Depending on the person, an allergic reaction can happen right after the food is eaten or several hours later. This reaction could include some or all of the following symptoms: