What is a common consequence of not including allergen information in menu items?

The inclusion of allergen information in menu items is crucial for customer safety, particularly for individuals with food allergies. Not providing this information can lead to higher chances of allergic reactions. These reactions can range from mild symptoms, such as hives or gastrointestinal discomfort, to severe cases, including anaphylaxis, which is life-threatening.

When allergen information is omitted, customers may unknowingly consume food items containing allergens to which they are sensitive. This negligence can create significant health risks and potentially result in legal repercussions for the establishment. Therefore, including accurate allergen information not only safeguards the customers’ health but also builds trust and responsibility in the restaurant's practices.

The other options, while related to the menu and customer interactions, do not adequately address the critical safety concerns associated with allergen management.