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Food and Nutrition

Tree Nuts - One of the ten priority food allergens

2012
Cat. No.: H164-156/9-2012E-PDF
ISBN: 978-1-100-21162-6
HC Pub.: 120134

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Allergic reactions

Allergic reactions are severe adverse reactions that occur when the body's immune system overreacts to a particular allergen. These reactions may be caused by food, insect stings, latex, medications and other substances. In Canada, the ten priority food allergens are peanuts, tree nuts (almonds, Brazil nuts, cashews, hazelnuts, macadamia nuts, pecans, pine nuts, pistachio nuts and walnuts), sesame seeds, milk, eggs, seafood (fish, crustaceans and shellfish), soy, wheat, sulphites (a food additive) and mustard.

What are the symptoms of an allergic reaction?

When someone comes in contact with an allergen, the symptoms of a reaction may develop quickly and rapidly progress from mild to severe. The most severe form of an allergic reaction is called anaphylaxis. Symptoms can include breathing difficulties, a drop in blood pressure or shock, which may result in loss of consciousness and even death. A person experiencing an allergic reaction may have any of the following symptoms:

  • Flushed face, hives or a rash, red and itchy skin
  • Swelling of the eyes, face, lips, throat and tongue
  • Trouble breathing, speaking or swallowing
  • Anxiety, distress, faintness, paleness, sense of doom, weakness
  • Cramps, diarrhea, vomiting
  • A drop in blood pressure, rapid heartbeat, loss of consciousness

How are food allergies and severe allergic reactions treated?

Currently there is no cure for food allergies. The only option for managing the risk is to completely avoid the specific allergen. Appropriate emergency treatment for anaphylaxis (a severe food allergy reaction) includes an injection of epinephrine, which is available in an auto-injector device. Epinephrine must be administered as soon as symptoms of a severe allergic reaction appear. The injection must be followed by further treatment and observation in a hospital emergency room. If your allergist has diagnosed you with a food allergy and prescribed epinephrine, carry it with you all the time and know how to use it. Follow your allergist's advice on how to use an auto-injector device.

Frequently asked questions about tree nut allergies

Which tree nuts are included in Canada's list of priority food allergens?

The tree nuts of concern are almonds, Brazil nuts, cashews, hazelnuts (filberts), macadamia nuts, pecans, pine nuts (pignolias), pistachio nuts and walnuts. Peanuts are part of the legume family and are not considered a tree nut.

I have a tree nut allergy. How can I avoid a tree nut-related reaction?

Avoid all food and products that contain tree nuts and tree nut derivatives which contain tree nut protein . These include any product whose ingredient list warns it "may contain" or "may contain traces of" tree nuts.

Should I avoid peanuts if I have a tree nut allergy?

Peanut is a part of legume family and not tree nut; however, while peanuts and tree nuts are different, in some cases some people with a tree nut allergy also react to peanuts. Consult your allergist before eating peanuts or any tree nuts that are not a regular part of your diet.

Should I avoid coconut and nutmeg if I have a tree nut allergy?

A coconut is a seed of a fruit and nutmeg is obtained from the seeds of a tropical tree. Coconut and nutmeg are not considered tree nuts for the purposed of food allergen labelling in Canada and are not usually restricted from the diet of someone allergic to tree nuts. However, some people have reacted to coconut and nutmeg. Consult your allergist before trying coconut or nutmeg products.

How can I determine if a product contains tree nuts or tree nut derivatives?

Always read the ingredient list carefully.

If tree nuts are part of the product formulation, they must be declared in the list of ingredients or in a separate "contains:" statement immediately following the list of ingredients.

What do I do if I am not sure whether a product contains tree nuts or tree nut derivatives?

If you have a tree nut allergy, do not eat or use the product. Get ingredient information from the manufacturer.

Does product size affect the likelihood of an allergic reaction?

Product size does not affect the likelihood of a reaction; however, the same brand of product may be safe to consume for one product size but not another. This is because product formulation may vary between different product sizes of the same product.

Avoiding tree nuts and tree nut derivatives

Make sure you read product labels carefully to avoid products that contain tree nuts and tree nut derivatives. Avoid food and products that do not have an ingredient list and read labels every time you shop. Manufacturers may occasionally change their recipes or use different ingredients for varieties of the same brand.

Other names for tree nuts

In the past, some products have used other names for tree nuts on their labels. These names are not permitted based on the enhanced labelling requirements for food allergen and gluten sources and added sulphites, however, if you have a tree nut allergy and see one of the following in the list of ingredients on a product you should not eat it.

  • Anacardium nuts
  • Filberts (hazelnuts)
  • Nut meats
  • Pinon
  • Queensland nut (macadamia)

Food and products that contain or often contain tree nuts

  • Calisson (a marzipan-like candy made from almonds)
  • Dishes such as almond chicken, pad thai, satay, chili and trout amandine
  • Gianduja and giandula (chocolate blended with hazel nuts)
  • Marzipan (almond paste)
  • Tree nut oils
  • Pralines
  • Spreads, for example, almond paste-based spreads, cheese spreads, chocolate nut spreads
  • Nougat (sugar paste made with nuts), for example, Torrone
  • Nutella
  • Vegetarian dishes

Other possible sources of tree nuts

  • Baked goods
  • Baking mixes, cereals, crackers and muesli
  • Barbecue and pesto sauces
  • Dressings and gravies
  • Flavoured coffees
  • Frozen desserts
  • Liqueurs, for example, amaretto, Frangelico
  • Natural flavourings and extracts, for example, pure almond extract
  • Salads, for example, Waldorf salad
  • Snack foods, for example, trail mix

Non-food sources of tree nuts

  • Bean bags, kick sacks/hacky sacks
  • Bird seed
  • Cosmetics, hair care products, sun screens
  • Massage oils
  • Pet food

Note: These lists are not complete and may change. Food and food products purchased from other countries, through mail-order or the Internet, are not always produced using the same manufacturing and labelling standards as in Canada.

What can I do?

Be informed

See an allergist and educate yourself about food allergies. Contact your local allergy association for further information.

If you or anyone you know has food allergies or would like to receive information about food being recalled, sign up for the Canadian Food Inspection Agency's (CFIA) Next link will take you to another Web site e-mail "Food Recalls and Allergy Alerts" notification service. When you sign up you will automatically receive food recall public warnings.

Before eating

Allergists recommend that if you do not have your auto-injector device with you, that you do not eat. If an ingredient list says a product " contains:" or "may contain:" tree nut or tree nut derivatives, do not eat it. If you do not recognize an ingredient or there is no ingredient list available, avoid the product.

Watch out for allergen cross contamination!

Cross contamination is the transfer of an ingredient (food allergen) to a product that does not normally have that ingredient in it. Through cross contamination, a food that should not contain the allergen could become dangerous to eat for those who are allergic.
Cross contamination can happen:

  • during food manufacturing through shared production and packaging equipment;
  • at retail through shared equipment, e.g., cheese and deli meats sliced on the same slicer; and through bulk display of food products, e.g., bins of baked goods, bulk nuts; and
  • during food preparation at home or in restaurants through equipment, utensils and hands.

What is the Government of Canada doing about food allergens?

The Government of Canada is committed to providing safe food to all Canadians. The CFIA and Health Canada work closely with municipal, provincial and territorial partners and industry to meet this goal.

The CFIA enforces Canada's labelling laws and works with associations, distributors, food manufacturers and importers to ensure complete and appropriate labelling of all foods. The CFIA recommends that food companies establish effective allergen controls to prevent the occurrence of undeclared allergens and cross-contamination. The CFIA has developed guidelines and tools to aid them in developing these controls. When the CFIA becomes aware of a potential serious hazard associated with a food, such as undeclared allergens, the food product is recalled from the marketplace and a public warning is issued. The CFIA has also published several advisories to industry and consumers regarding allergens in food.

Health Canada has worked with the medical community, consumer associations, and the food industry to enhance labelling regulations for priority allergens, gluten sources and sulphites in pre-packaged food sold in Canada. Health Canada has amended the Food and Drug Regulations to require that the most common food and food ingredients that cause life-threatening or severe allergic reactions are always identified by their common names on food labels allowing consumers to easily recognize them.

More information on the regulations to enhance the labelling of food allergens, gluten sources and added sulphites can be found on the Health Canada website.

If you come across a food that you think is improperly labelled, contact the CFIA and provide information about the product.

Next link will take you to another Web site Report a food safety or labelling concern.

Where can I get more information?

For more information on:

  • food allergies; and
  • subscribing to the "Food Recalls and Allergy Alerts" e-mail notification service

visit the Next link will take you to another Web site CFIA Website or call 1-800-442-2342/TTY 1-800-465-7735 (8:00 a.m. to 8:00 p.m. Eastern time, Monday to Friday).

For information on this and other Government of Canada programs and services call

  • 1 800 O-Canada (1-800-622-6232)
  • TTY 1-800-465-7735

Below are some organizations that can provide additional allergy information:

Developed in consultation with Allergy/Asthma Information Association, Anaphylaxis Canada, Association québécoise des allergies alimentaires, Canadian Society of Allergy and Clinical Immunology and Health Canada.