Recent studies show that introducing potential allergenic foods SHOULD NOT BE DELAYED. Early and consistent exposure to allergenic foods may, in fact, reduce the risk of developing future allergies. AND…The timing of introduction of allergenic complementary foods is also very important – ideally between 6 and 9 months of age.

Introducing allergens to babies

If your baby does not have an increased risk for atopic diseases in the family (asthma, eczema), the risk is low for a serious reaction. However, I advise caution and always to consult with the pediatrician and / or pediatric dietitian before starting!

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The list below accounts for more than 90% of all food allergies, according to the American Academy of Pediatrics.

  • Cow’s milk
  • Peanuts
  • Tree nuts such as Almonds, Cashews, Walnuts
  • Eggs
  • Shellfish
  • Fish
  • Wheat
  • Sesame
  • Soybean

To keep track of your baby’s first 100 foods (including allergens), I have created a tracking to be used as a guide in baby’s first year. Check out my shop for the cutest printables.


Below are some tips I followed when introducing allergens to my own baby at 6 months old. Again, always consult with a pediatrician and / or pediatric nutritionist before starting.

  • Start with typical complementary foods before introducing high allergenic foods.
  • Offer common food allergens separately and in small amounts.
  • Offer allergenic foods at home (not in a day care) and in the morning / noon so that you can monitor your baby for any reactions throughout the day.
  • Leave a gap of at least 3 days between the introduction of each allergenic food. This way, it is easier to identify which foods were potentially causing allergies.
  • Once the allergenic is well tolerated, it should be consumed regularly as part of a varied diet.


Allergists from Ready.Set.Food! state that” symptoms of a food allergy reaction USUALLY start seconds to minutes after your baby eats a food, they’re allergic to”.

  • Swelling of the face, lips and eyes
  • Itchy, watery eyes
  • Itching or rash
  • Wheezing or shortness of breath
  • Vomiting or diarrhea

Look for the common allergic reactions above and seek medical advice in case these happen. A mild to moderate reaction can quickly turn severe.


Interested to learn more check the articles below:

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