Which type of foods are most likely to cause allergies?

The answer identifies a specific group of foods that are known to be the most common allergens. Peanuts, tree nuts, fish, shellfish, eggs, milk, soy, and wheat are recognized as the "Big Eight" allergens, which account for the majority of allergic reactions. They contain proteins that can trigger an immune response in sensitive individuals, leading to allergic reactions that can range from mild to severe, including anaphylaxis.

Understanding the nature of these allergens is crucial for food safety management, especially in food service environments where cross-contamination can occur. Staff must be trained to recognize these allergens, ensure proper labeling, and handle food preparation in a way that minimizes risk to individuals with allergies.

Fruits and vegetables, while they can cause allergic reactions in some people, are far less commonly associated with severe food allergies overall. Processed foods may contain allergenic ingredients, but they can vary widely and are not inherently allergenic themselves. Whole grains and dairy products are also less frequently linked to allergies compared to the specific items listed in the correct answer.