What we see in clinic

At The Children's Naturopath, food intolerances and sensitivities are an important consideration when investigating recurring digestive, skin and behavioural concerns in children.

Drawing on over 28 years of clinical experience, we pay particular attention to the types of foods children consume, how frequently they eat them, the quantity consumed, and whether symptoms improve when particular foods are reduced.

One of the first questions we ask parents is: "Does your child react every time they eat a particular food, or only when they have been eating a lot of it?"

Food allergy versus food intolerance

An important distinction we explore is whether a child is experiencing a food allergy or a food intolerance.

Food allergies involve the immune system. Some cause immediate reactions, while others can produce delayed symptoms.

Food intolerances generally involve difficulty digesting or tolerating particular foods or food chemicals, and may be influenced by the amount consumed. For example, a child with lactose intolerance may tolerate a small amount of dairy but experience bloating, abdominal discomfort or loose stools after larger quantities.

This distinction matters for safety as well as comfort. Suspected food allergy needs medical assessment — it is not something to investigate at home with elimination and reintroduction.

Why the amount and frequency of a food matters

One pattern we frequently investigate is whether a child can tolerate a food occasionally but develops symptoms when consuming it several times throughout the day.

For example, a child might have wheat-based cereal for breakfast, a sandwich for lunch and pasta for dinner. Similarly, dairy may appear in breakfast cereal, yoghurt, cheese and milk drinks throughout the day.

In children with certain food intolerances, the total quantity consumed may influence whether symptoms develop. We therefore consider not only which foods a child eats, but how much and how often.

Understanding delayed food reactions

Another challenge for parents is that symptoms do not always develop immediately after eating.

Some food-related reactions may occur several hours later, making it difficult to identify a connection. A child may experience abdominal discomfort or changes in bowel movements later in the day, rather than immediately after a meal.

Delayed immune-mediated food allergies can also produce symptoms hours or days after exposure. We therefore encourage parents to consider patterns across several days rather than focusing only on the most recent meal.

Histamine and the "histamine bucket"

Another area we sometimes investigate is whether histamine-rich foods may be contributing to a child's symptoms. Histamine is a naturally occurring chemical involved in immune responses, which also acts as a neurotransmitter.

We use the term histamine bucket to help parents understand the concept of cumulative exposure. Rather than focusing on one food, we look at how many histamine-rich foods a child consumes throughout the day.

Examples include:

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  Tomatoes and tomato-based sauces.

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  Bananas, avocados and citrus fruits.

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  Strawberries.

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  Spinach.

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  Fermented foods.

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  Slow-cooked meats and long-cooked bone broths.

Note that these are nutritious foods, and most children eat them without any difficulty. Where histamine sensitivity is suspected, we may explore whether reducing higher-histamine foods for a short period changes symptoms — and we provide a full food list as part of the consultation, so the approach fits the individual child.

Using elimination and reintroduction to identify triggers

When a particular food intolerance is suspected, we may recommend a short, structured dietary trial. For example, dairy or wheat may be investigated when a child's symptoms appear to be associated with these foods.

Rather than removing numerous foods indefinitely, we focus on identifying whether a particular dietary change makes a noticeable difference. Where appropriate, foods are then reintroduced individually while parents observe whether symptoms return.

This helps establish whether a food is contributing to symptoms, and whether the amount consumed influences tolerance.

Elimination diets in children should be short, supervised and followed by reintroduction. Removing food groups long-term without guidance carries its own nutritional risk, and foods associated with suspected immediate or significant allergic reactions must never be reintroduced at home.

What we encourage parents to observe

A detailed food and symptom diary is one of the most useful tools when investigating possible food intolerances. We encourage parents to record:

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  Foods and drinks consumed throughout the day.

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  Approximate quantities, and how frequently particular foods are eaten.

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  Any digestive symptoms, including bloating, tummy aches and changes in bowel movements.

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  Changes in eczema, itching or other skin symptoms.

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  Sleep disturbances or behavioural changes.

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  Whether symptoms appear immediately or several hours after eating.

Our clinical focus is on identifying possible food triggers, understanding individual tolerance, and helping families develop a varied, practical diet that supports their child's digestive health and overall wellbeing.

References

Clinical insights by Fiona Stock — Paediatric Naturopath & Children's Nutritionist, founder of The Children's Naturopath, with 28 years of clinical experience.