While anyone can develop an allergy to virtually any food, a small group of foods accounts for the vast majority of food allergies. Being aware of these common allergens is crucial for managing food allergies and preventing allergic reactions.

In the UK:

In the UK, 14 major allergens must be declared on food labels. These are sometimes referred to as the "14 major allergens."

The 14 major allergens in the UK are:

• Celery: This includes celery stalks, leaves, seeds, and celeriac. Celery can be found in sauces, soups, and seasonings.

• Cereals containing gluten: This includes wheat, rye, barley, oats, and spelt, as well as any products containing these grains. Gluten is a protein found in these grains that can trigger reactions in people with celiac disease or gluten sensitivity.

• Crustaceans: This includes crabs, lobsters, prawns, and shrimp. Shellfish allergies can be severe.

• Eggs: Eggs are a common ingredient in many foods, including baked goods, sauces, and processed foods. 

• Fish: This includes all types of fish. Fish allergies are more common in adults.

• Lupin: Lupin is a legume that can cause allergic reactions. It can be found in flour, baked goods, and some vegetarian products.

• Milk: Cow's milk allergy is one of the most common childhood food allergies. It's important to be aware of hidden sources of dairy.

• Molluscs: This includes mussels, clams, oysters, and scallops.

• Mustard: Mustard is a common ingredient in condiments, sauces, and dressings.

• Nuts (Tree Nuts): This category includes a variety of nuts, such as almonds, cashews, walnuts, pecans, pistachios, and hazelnuts. Nut allergies can be severe.

• Peanuts: Peanut allergy is often severe and can cause life-threatening reactions. Peanuts are legumes, but they're often grouped with tree nuts due to similar allergenic properties.

• Sesame: Sesame allergy is becoming increasingly recognized as a significant allergen.

• Soya: Soya is a common ingredient in processed foods.

• Sulphites: Sulphites are used as preservatives in some foods and drinks. They can trigger reactions in some people, particularly those with asthma.

UK vs. US Allergen Labeling:

It's important to note that allergen labeling regulations differ between the UK and the US. While there is significant overlap, there are some key differences:

• Number of Allergens: The UK mandates labeling for 14 major allergens, while the US focuses on the "Big 8" (milk, eggs, peanuts, tree nuts, soy, wheat, fish, and shellfish). This means some allergens that are common in the UK (like celery, mustard, lupin, and sulphites) might not be explicitly listed on US food labels unless they are present in significant amounts.

• Labeling Practices: While both regions require clear labeling of allergens, the specific wording and formatting may vary.

For US Users:

If you are using the app in the US, please be aware of the US "Big 8" allergens. While the app may contain information about additional allergens, US food labels are required to declare, at minimum, these eight.

For UK Users:

This FAQ focuses on the 14 allergens required to be declared on food labels in the UK. Please be aware of these specific allergens when using the app and reading food labels in the UK.

Important Note: This list represents the most common food allergens. However, it's important to remember that anyone can develop an allergy to any food. Always read labels carefully and consult with an allergist if you suspect you have a food allergy.