The document discusses food allergies, noting that they occur when the immune system mistakenly attacks harmless proteins in certain foods, and that the most common food allergens are milk, peanuts, eggs, tree nuts, fish, soy, shellfish, and wheat. Symptoms of food allergies can range from mild reactions like hives or nausea to the potentially life-threatening anaphylaxis, so avoidance of allergenic foods and preparation in schools and other public places is important. Proper food labeling, preparation, and having emergency plans in place can help manage food allergies and prevent dangerous reactions.