A common question that comes up for people with an allergy to peanut is whether they can eat soy-based foods or other beans. Peanuts and soybean are in the legume family, which includes beans and lentils. Cross-Reactivity Between Peanut and Other Legumes (Soy and Beans) For example, most people with an allergy to cow's milk can eat beef and most people with an allergy to egg can eat chicken without any symptoms to the respective meats. Cross-Reactivity Between Foods in the Same Animal GroupĬross-reactivity is uncommon between foods in the same animal group. The risk is much lower, about 5%, for allergy to mare's milk (or donkey's milk) which is less cross-reactive with cow's milk. In studies, the risk of allergy (resulting in symptoms) to goat's milk or sheep's milk in a person with cow's milk allergy is about 90%. There is a high degree of cross-reactivity between cow's milk and the milk from other mammals such as goat and sheep. Cross-Reactivity Between Cow's Milk and Milk from Other Mammals Many people end up avoiding foods because of a positive test and in some cases, they may have been eating that food before without any problems. This is true even though they have a positive skin test or blood test to that food. The individual may not have allergic symptoms from a food that is cross-reactive with another food or pollen to which the individual is allergic. However, the individual may or may not have any allergic symptoms from eating that food. Since the immune system sees the similar proteins as the same, a positive skin test or blood test (serum IgE) can result for a food, yet the patient may be actually allergic to a substance that is cross-reactive to that food. Cross-reactivity can also happen between pollen and foods or latex and foods.īecause of cross-reactivity, testing and diagnosis of food allergies can be challenging. In the case of food allergies, cross-reactivity can occur between one food and another. As a result, the immune system sees them as the same. The most common food allergens are milk, egg, wheat, soy, peanut, tree nuts, fish and shellfish.Ĭross-reactivity occurs when the proteins in one substance are like the proteins in another. Anaphylaxis can occur with any IgE-mediated food allergy. They can also include dizziness or loss of consciousness (from a drop in blood pressure) and other serious, potentially life-threatening complications. Symptoms of anaphylaxis involve more than one organ system from the above list. Anaphylaxis is a severe allergic reaction that is rapid in onset and progressive. Symptoms include any or several of the following: skin itching, hives, swelling of the skin, nausea, vomiting, diarrhea, breathing difficulty (wheezing, repeated throat clearing, cough, throat tightness), or anaphylaxis. When exposure to the food occurs, symptoms start quickly. The most common type is when the immune system makes a type of antibody called IgE to proteins in a particular food. If Allergic to One Food, Do You Have to Avoid Related Foods?Ī food allergy occurs when the immune system overreacts to a food. Planning for Schools with Food Allergies.Menu Planning for the Food Allergy Cook.Substitutions for Peanuts and Tree Nuts.Formula Options for Infants with Food Allergies.Coping With the Emotional Aspects of Food Allergies.Maci and Ava Teach Others about Food Allergies.Ciara Builds a Food Allergy Team at School.Non-food Rewards for Children with Food Allergies.Potential Food Allergens in School Crafts and Supplies.School Health Care Plans for Food Allergies.Avoiding Allergic Reactions in Your Kitchen.Training for Babysitters and Caregivers.What Does Kosher for Passover Mean for Food Allergies?.Kosher Labeling and Milk or Dairy Allergy.FAQ About the Food Allergen Labeling Consumer Protection Act.Reporting an Allergic Reaction to Foods or Drugs.Natural Flavoring Can Contain Food Allergens.
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