In a nutshell: Some people may have food allergies to certain foods, and food allergies can range from mild to severe and can be fatal. If you experience food allergy symptoms after eating, seek medical attention immediately. Check food labels for allergen information to avoid eating foods that contain allergens.
What is food allergy?
Food allergy is a reaction of the body's immune system to some substances in food. A very low level of an allergenic substance may cause an allergic reaction in susceptible populations. A local survey revealed that about 1 out of 20 children in Hong Kong was reported to have food allergies.
Common allergens are:
Allergens |
Some typical examples of food item in which allergens may be found |
Cereals that contain gluten (e.g. wheat, rye, barley and oats) |
|
Crustaceans (e.g. prawns, crabs and lobsters) |
|
Eggs |
|
Fish |
|
Milk |
|
Molluscs (e.g. mussels and oysters) |
|
Tree nuts (e.g. almonds, cashews, hazelnuts, pecans and walnuts) |
|
Peanuts |
|
Soybeans |
|
Sulphur dioxide and sulphites |
|
Symptoms of food allergy include swollen face, tongue or lips, shortness of breath and itchy skin. Anaphylactic shock, an acute, severe and potentially life-threatening allergic reaction may develop in severe cases.
Seek medical advice at once if the following symptoms develop after meal:
- Rash
- Swollen face
- Swollen tongue
- Swollen lips
- Shortness of breath
- Itchy skin
- Anaphylactic shock
How to avoid food with allergens?
- Read food allergen information on food labels to identify if any food or food ingredients of your allergic concern are present in the food.
- Avoid the food or food ingredients which you are allergic to.