Understanding Wheat Allergies and Coeliac Disease

The Difference Matters More Than Ever

In recent years, gluten-free has become a lifestyle choice for some, whilst for others it is a medical necessity. With the resurgence of British heritage wheat and a boom in home baking, it is easy to get swept up in trends. But if you suspect a problem with wheat, getting the right diagnosis is crucial. Three distinct conditions are often lumped together: wheat allergy, coeliac disease, and non-coeliac gluten sensitivity. They are not the same, and they require different approaches.

Wheat Allergy: A Rapid Immune Response

A wheat allergy is an allergic reaction to proteins found in wheat, including but not limited to gluten. It is mediated by IgE antibodies, and symptoms typically appear within minutes to a couple of hours after eating or even inhaling wheat flour. Symptoms can include hives, itching, swelling, wheezing, nausea, and in severe cases, anaphylaxis. This is a true allergy, and it can be life-threatening. For home bakers, handling flour can trigger symptoms, so careful management is essential. A wheat allergy is not coeliac disease, and it does not necessarily mean you must avoid other gluten-containing grains like barley or rye, though you should follow medical advice.

Coeliac Disease: An Autoimmune Condition

Coeliac disease is an autoimmune disorder, not an allergy. When someone with coeliac disease eats gluten – a protein found in wheat, barley, and rye – their immune system attacks the lining of the small intestine. This damage prevents proper absorption of nutrients and can lead to symptoms like diarrhoea, bloating, fatigue, anaemia, and weight loss. It can also cause long-term complications such as osteoporosis and certain cancers if untreated. In the UK, around one in 100 people are affected, yet many remain undiagnosed. Crucially, coeliac disease requires a strict, lifelong gluten-free diet. That means no wheat, including heritage varieties like spelt, emmer, or einkorn. They all contain gluten. For home bakers diagnosed with coeliac disease, gluten-free flours are the only safe option.

Non-Coeliac Gluten Sensitivity: A Real but Different Problem

Non-coeliac gluten sensitivity (NCGS) is a condition where people experience symptoms similar to coeliac disease – such as bloating, headache, fatigue, or brain fog – but without the intestinal damage or allergic response. It is diagnosed by excluding coeliac disease and wheat allergy first. The exact cause is not fully understood, and there is no reliable test. Some research suggests that in some cases, people may actually be reacting to fructans, a type of carbohydrate in wheat, rather than gluten itself. Some people with NCGS may tolerate small amounts of gluten, whilst others react to other components of wheat. Because it is a diagnosis of exclusion, you should never self-diagnose. A GP can guide you through the process.

Why You Should Not Change Your Diet Before Medical Advice

It is tempting to cut out wheat and see if you feel better. But stopping gluten before testing can make it impossible to get an accurate diagnosis. Coeliac disease tests – blood tests and sometimes a biopsy – rely on you eating gluten regularly. If you remove it, the tests may come back negative even if you have the condition. That could mean missing a diagnosis and risking long-term health problems. Similarly, a wheat allergy needs proper assessment, often with an allergist. Cutting out wheat without support can also lead to nutritional deficiencies, as wheat is a key source of fibre, B vitamins, and iron in many UK diets. If you are a home baker, do not assume heritage wheat is safer; for coeliac disease, it is not. For those with NCGS, the picture is murkier, but medical guidance is still key.

Moving Forward with Confidence

Once you have a diagnosis, you can adapt your baking and eating with confidence. If you have coeliac disease, explore gluten-free flours like rice, buckwheat, or millet – many UK millers offer excellent blends. If you have a wheat allergy, you may need to avoid wheat entirely but could use other grains. For those without a medical condition, British heritage wheat and sustainable grain growing offer exciting opportunities. Heritage varieties such as sharpe’s, squareheads master, or rivet can be grown with fewer inputs and add diversity to our fields and loaves. But they are not a solution for coeliac disease or wheat allergy. Always put health first, and enjoy the journey of home baking – whether that is with traditional wheat or safe alternatives.