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Food allergies occur when the body's immune system mistakenly identifies certain proteins in food as dangerous, triggering a defensive reaction against the harmless proteins. Tree nuts, such as walnuts, are among the 'big eight' allergens responsible for 90% of all food allergies. While some individuals may outgrow other food allergies, tree nut allergies typically persist for life. These allergies can lead to serious, potentially life-threatening reactions.
Possible symptoms of a walnut allergy include:
- Itching or swelling in the mouth, tongue, or lips
- Skin reactions (eczema, hives, swelling, redness in the face or extremities)
- Digestive issues (abdominal pain, nausea, vomiting, diarrhea)
- Breathing problems (runny or blocked nose, coughing, sneezing, wheezing, difficulty breathing)
- Heart-related symptoms (low blood pressure, dizziness, fainting)
If you experience symptoms of anaphylaxis, such as nausea, vomiting, rapid or weak pulse, difficulty breathing, confusion, or loss of consciousness, seek immediate medical help, as this condition can be fatal.
Walnut allergy symptoms can arise from even a small amount of the allergen or from touching items that contain trace amounts of it. Cross-contamination during manufacturing may cause walnuts to appear in products even if they are not listed as an ingredient. Always check labels carefully to identify possible traces of walnuts. Common sources of walnut-related allergic reactions include cookies, candies, chocolates, granola bars, and ice cream. Walnuts may also be found in cereals, sauces, specialty coffees, liqueurs, as well as personal care products like shampoos, lotions, bath items, and pet food. Since pecans belong to the same family as walnuts, those allergic to walnuts may also react to pecans.
