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Coeliac disease and the gluten-free diet done properly

Coeliac disease and the gluten-free diet done properly: this guide covers starting with the mistake that ruins thousands of tests: you must still be eating…

This guide is general education, not a diagnosis or an individual treatment plan. Urgent, severe or worsening symptoms belong with the local emergency service or a qualified clinician.

What this guide covers

This guide covers starting with the mistake that ruins thousands of tests: you must still be eating gluten when you are tested, and going gluten-free first makes the diagnosis impossible for months.

Then: coeliac versus wheat allergy versus non-coeliac gluten sensitivity, the tTG-IgA test and why total IgA is measured with it, biopsy and the paediatric no-biopsy pathway, dermatitis herpetiformis, the silent presentations (iron deficiency, low bone density, infertility, raised liver enzymes), the 20 mg/kg legal threshold and what "gluten-free" means on a label, oats and the contamination question that is argued differently in Finland than elsewhere, cross-contamination in a shared kitchen, eating out in Estonia and Finland, first-degree relatives, and the follow-up nobody gets.

One focused section asks: "Do not go gluten-free before the test".

How to use it

Start with the description that most closely matches your question about Coeliac disease and the gluten-free diet done properly. Use the evidence section to understand what is known, then use the boundary section to decide when self-education should stop and clinical care should begin.

The page keeps the main question, its evidence base and its limits together in one canonical place. That makes it useful as a quick orientation and avoids splitting a broad subject into shallow pages before each narrower answer has enough verified material of its own.

Search vocabulary in four languages

Terminology changes across borders. These are example phrases people use for the same subject in Estonian, Finnish, Russian and English; they are included as a practical vocabulary aid, not as hidden keywords.

Evidence and provenance

The evidence map below records the primary, official or openly licensed material chosen for this guide. It is deliberately visible so a reader can tell the difference between a rule published by an authority, a measured dataset and an editorial explanation.

Source: ESPGHAN 2020 coeliac guidelines (JPGN, open access), ESsCD European guideline for coeliac disease (UEG Journal, open access), Codex Standard 118-1979 and EU Regulation 828/2014 (public/EUR-Lex). · checked 2026-09-09

Source names are preserved even where an authority changes its web address. No figure is added to this launch page unless it is already present in the cited source description or can be computed from a named dataset.

Scope and boundaries

/dietreviews grades gluten-free as a chosen diet; this is the disease that makes it mandatory, and the test that proves it.

Connected TempoLife guides

The following paths are the intentional hand-offs named in the brief. They keep adjacent subjects separate while making the next useful reference easy to find.

Why it belongs on TempoLife

/gut, /diets, /dietreviews, the apex iron and calcium hubs and the /calories gluten facets.

Frequently asked questions