Wheat flour
Wheat flour is ground wheat kernel, the base of bread, pasta, and most baked goods. It contains gluten, making it unsafe for people with coeliac disease or wheat allergy, and it is a major source of fructans, a fermentable carbohydrate that can trigger IBS symptoms.
Wheat flour retains the endosperm’s storage proteins gliadin and glutenin, which form gluten with water. Wheat also contains fructans, short chains of fructose that resist digestion in the small intestine.
For coeliac disease, gluten triggers an autoimmune reaction and must be avoided entirely, even in traces; EU "gluten-free" labelling caps gluten at 20 mg/kg. Separately, wheat’s fructans are a high-FODMAP carbohydrate and a recognised IBS trigger, independent of any gluten sensitivity.
Who this affects
Avoid
- Celiac & gluten-free: Contains gluten — must be avoided entirely.
Caution
- IBS & Low-FODMAP: High in fructans, a common IBS trigger.
Frequently asked questions
No. Wheat is one of the cereals that naturally contain gluten, so standard wheat flour (plain, self-raising, wholemeal, spelt, durum) is not gluten-free. Under EU law, cereals containing gluten must always be declared as an allergen. Always check the label — a product is only gluten-free if it says so.
No. People with coeliac disease must avoid wheat, barley and rye because gluten triggers an immune reaction that damages the gut. The one exception is specially processed “gluten-free wheat starch”, where gluten is reduced to a trace level (no more than 20 ppm) and the product is legally labelled gluten-free. Ordinary wheat flour is never suitable.
Yes. Wheat flour is high in fructans, a type of oligosaccharide (the “O” in FODMAP) that can trigger symptoms in people with IBS. Monash notes the low-FODMAP approach does not require a fully wheat-free or gluten-free diet, as small amounts may be tolerated. Personal tolerance varies, so test your own limits with guidance.
Yes. Wheat falls under “cereals containing gluten”, one of the 14 allergens that must be emphasised on ingredient lists under EU Regulation (EU) No 1169/2011. This applies at any level of use, so any wheat-derived ingredient must be declared. The label is the authoritative source for what a product contains.
They are different conditions. Coeliac disease is a lifelong autoimmune reaction to gluten in wheat, barley and rye. A wheat allergy is an immune (IgE) reaction specifically to wheat proteins. Both mean avoiding wheat, but diagnosis and management differ, so seek advice from a healthcare professional.
Bread, pasta, pastry, cakes, biscuits, batter, breakfast cereals, and many sauces, ready meals and processed foods. Because cereals containing gluten are a mandatory labelled allergen in the EU, they must be highlighted in the ingredients list. Always read the label, as recipes and cross-contamination risks can change.