Nine of the most common food allergies in Canada are eggs, milk, mustard, peanuts, seafood (fish, crustaceans, and shellfish), sesame, soy, sulphites, tree nuts and wheat. The prevalence of the allergies has led Canada to adopt strict labelling laws. All food labels must now explicitly list any allergens directly below the ingredients. Restaurants have also begun to list allergens next to food items on their menus.
Because of the potential seriousness of allergic reactions, many schools have policies in place to stop students from bringing certain items in their lunches, particularly peanuts. It's very important to follow the school's food allergen policy closely, even if one’s own child does not have allergies. The health and safety of other students depends on all parents and students following the school's policies.