May 24, 2026

introducing-allergens

Introducing Allergens: A Simple Step-by-Step Guide

A simple guide to introducing common allergens, understanding reactions, and building confidence during your baby's solids journey.

Introducing allergen foods can feel like one of the most nerve-wracking parts of starting solids. The good news is that a simple, structured approach can help make the process feel much more manageable and give parents confidence along the way. When parents hear the word "allergen," it's easy to imagine worst-case scenarios. In reality, many babies are introduced to common allergen foods without any issues. The key is introducing them gradually and thoughtfully.

When Can Allergens Be Introduced?

For most babies, common allergen foods can be introduced once they are ready to start solids, which is often around 6 months of age.

Signs of readiness typically include:

  • Good head and neck control
  • Being able to sit with support
  • Showing interest in food
  • Reaching for food during family meals

Common Allergens

  • Peanut
  • Egg
  • Dairy
  • Wheat
  • Soy
  • Sesame
  • Fish

A practical approach is to introduce one allergen at a time while keeping the rest of the meal familiar.

Example Introduction Schedule

Week 1

  • Plain yogurt (dairy)

Week 2

  • Well-cooked scrambled egg

Week 3

  • Peanut butter thinned into oatmeal or     yogurt

Week 4

  • Tahini mixed into a puree or yogurt

What to Watch For

After introducing anew allergen, monitor your child for:

  • Hives or rash
  • Swelling of the lips, face, or tongue
  • Vomiting
  • Difficulty breathing

If severe symptoms occur, seek immediate medical attention.

Quick Questions Parents Ask

How much of an allergen should I offer the first time?

A small amount is usually enough for an initial introduction. The goal is exposure rather than serving a full portion.

What should I do if I think my baby is having an allergic reaction?

Stop offering the food and monitor your child closely. Mild symptoms such as a rash or hives should be discussed with your pediatrician. If your child develops symptoms such as difficulty breathing, swelling of the face or tongue, or appears unwell, seek immediate medical attention.

🌱 Little Roots Tip

Once an allergen has been successfully introduced, regular exposure often matters just as much as the first introduction. Offering that food occasionally as part of normal meals can help keep it familiar.

Quote

When introducing new foods, confidence often grows one small step at a time.

"Children are not things to be molded, but people to be unfolded." — Jess Lair

Closing Thought

The goal isn't to complete a checklist of foods—it's to help your child build a comfortable and positive relationship with a wide variety of flavours over time.

Sources

Disclaimer: This article is intended for informational purposes only and should not replace professional medical advice. Parents should always consult their pediatric physician regarding feeding decisions, allergies, nutrition concerns, or developmental questions.