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How To Introduce Food Allergens

Updated: Aug 10

Parents are sometimes worried about giving common food allergens to their babies. However, it’s very unlikely that your baby will react so severely to a new food that they will need an emergency trip to the hospital. To put it further into perspective, food allergies occur in around 10% of babies in Australia. The chance of a severe allergic reaction such as anaphylaxis is much lower.

The latest health guidelines in Australia recommend that all babies should be given common food allergens including peanut butter, cooked egg, dairy and wheat products in the first year of life.

How should I introduce allergens?

Research shows it is best to offer common food allergens regularly, starting at around six months of age (not before four months), and when your baby is ready.

Smearing food on your baby’s skin will not help to identify possible food allergies, but you can rub a small amount of the food on the inside of your baby’s lip as a starting point. If there is no reaction after a few minutes, you can start giving small amounts.

Introduce cooked egg (eg. egg in muffins) and peanut butter in small amounts to start with. You can do this by mixing a small amount of hard-boiled egg or peanut paste (e.g. ¼ of a baby spoon) into your baby's usual food (eg. vegetable purée), and gradually increase the amount (up to several spoons full). If the food is tolerated, continue to give this food regularly (twice weekly) as part of their diet.

It’s best to introduce one new allergen food at each meal, and around two days apart, so you can easily identify any foods that cause a reaction. If a food causes a reaction, stop feeding your child that food.

Do I keep feeding my baby allergenic foods?

Once an allergen has been introduced safely, it is very important to keep offering and serving it in your baby’s food at least twice a week to maintain tolerance.

What reactions should I look out for?

Allergic reactions usually appear very quickly, so parents can gauge a reaction within a couple of hours following the meal.

Mild to moderate symptoms of food allergy include:

· Swelling of the face, lips and/or eyes

· Hives or welts on the skin

· Abdominal pain and/or vomiting.

Severe allergic reactions (anaphylaxis) to foods include:

· Difficult/noisy breathing

· Swelling of the tongue

· Swelling/tightness in the throat