Coeliac Disease Beyond Gluten Free: Scoring What is Really Safe

If you have coeliac disease, you already know the basics. No wheat, no barley, no rye. Check every label. Ask in every restaurant. Carry your own soy sauce. Live in a permanent state of low-level vigilance that people without coeliac disease cannot fully appreciate.

What you might not know is that avoiding gluten, while absolutely essential, is only part of the nutritional picture. Many people with coeliac disease develop secondary nutritional deficiencies that persist even after going strictly gluten free. The gluten-free products that line the Free From aisle are often nutritionally worse than the foods they replace. And if you also have another dietary condition, which is more common than you might expect, the complexity multiplies fast.

Coeliac UK estimates that roughly 1 in 100 people in the UK have coeliac disease, but only about 36% are currently diagnosed. That means roughly 500,000 people are walking around with undiagnosed coeliac disease, accumulating intestinal damage with every slice of bread.

The nutritional gap nobody talks about

When coeliac disease is active (before diagnosis or during accidental exposure), the villi in your small intestine become damaged and flattened. These villi are responsible for absorbing nutrients from food. When they are damaged, you absorb less of everything: iron, calcium, folate, zinc, vitamin D, vitamin B12.

Going gluten free allows the villi to heal, which takes months to years depending on the severity of damage and the individual. During this healing period, and often beyond it, many people with coeliac disease remain deficient in key nutrients.

Iron deficiency is extremely common. It was often the reason coeliac disease was investigated in the first place. Even after diagnosis, iron levels can take a long time to normalise, particularly if your diet does not deliberately prioritise iron-rich foods.

Calcium and vitamin D. Bone density is frequently reduced at diagnosis due to malabsorption. Osteoporosis risk is elevated in people with coeliac disease compared to the general population. Adequate calcium (700mg daily) and vitamin D (10mcg daily) are not optional extras. They are medical necessities.

Folate. Absorption is impaired by villous damage. Folate is particularly critical for women of childbearing age with coeliac disease, as deficiency increases the risk of neural tube defects.

Fibre. This is the one that catches people off guard. Many gluten-free substitute products are made from refined starches (rice flour, potato starch, tapioca starch) that are significantly lower in fibre than the wholegrain wheat products they replace. A slice of standard wholemeal bread contains roughly 2.5g of fibre. A slice of many gluten-free white breads contains under 1g.

The result is that a significant proportion of people with coeliac disease on a strict gluten-free diet are not meeting the UK recommended 30g of fibre per day, and the deficit can be substantial.

The Free From aisle problem

Walk into any UK supermarket and the Free From section is larger than it was five years ago. This is good for availability. It is not always good for nutrition.

Many gluten-free substitute products compensate for the loss of gluten (which provides texture and structure) by adding extra sugar, fat, or both. A gluten-free biscuit is still a biscuit. A gluten-free pizza base made from refined rice flour has a higher glycaemic index and less fibre than a standard wheat pizza base.

This is not an argument against buying Free From products. It is an argument for reading beyond the "gluten free" label and assessing the actual nutritional quality of what you are buying. Coeliac UK's app reviews on the App Store reflect widespread frustration: users report that the app tells them whether something contains gluten but not whether it is actually nutritious. Knowing a product is safe is necessary. Knowing it is good for you is a separate question.

The best gluten-free products tend to be those made from naturally gluten-free wholegrains: brown rice, quinoa, buckwheat, millet, oats (certified gluten-free oats, as standard oats are frequently cross-contaminated). These provide fibre, B vitamins, and minerals that refined starch substitutes do not.

Naturally gluten-free foods that deserve more attention

The most nutritious gluten-free diet is not one built around substitute products. It is one built around foods that are naturally gluten free.

Potatoes, sweet potatoes, and yams. Versatile, cheap, and naturally gluten free. Baked, boiled, mashed, roasted. With their skins on, they provide decent fibre.

Rice. Brown and basmati rice provide more fibre and nutrients than white rice. Rice noodles are a good alternative to wheat pasta.

Oats (gluten-free certified). This is important to get right. Pure oats do not contain gluten, but most commercially available oats are contaminated with wheat during growing, harvesting, or processing. Only oats labelled "gluten free" are safe for people with coeliac disease. Some people with coeliac disease react to avenin, a protein in oats, even when they are uncontaminated. Introduce gluten-free oats cautiously and monitor your response.

Quinoa. A complete protein source (contains all essential amino acids), good fibre, and naturally gluten free. Works as a side dish, in salads, or as a porridge.

Buckwheat. Despite the name, buckwheat is not related to wheat and contains no gluten. Buckwheat flour makes excellent pancakes. Soba noodles (check they are 100% buckwheat, as some contain wheat flour) are a useful pasta alternative.

Lentils, chickpeas, and beans. All naturally gluten free. Excellent sources of fibre, protein, iron, and folate. A tin of lentil soup, a chickpea curry, a three-bean chilli. These should be regular features in a coeliac diet.

Meat, fish, eggs, dairy. All naturally gluten free in their unprocessed forms. Watch for gluten in processed versions: sausages, burgers, pre-marinated meats, and battered fish all frequently contain wheat.

The overlap problem

Coeliac disease does not exist in isolation. Autoimmune conditions tend to cluster. People with coeliac disease have higher rates of type 1 diabetes, thyroid disease, and other autoimmune conditions. IBS symptoms are also common in coeliac disease, and distinguishing between ongoing low-level gluten exposure, true IBS, and other food sensitivities is a diagnostic challenge that takes time to work through.

If you have coeliac disease and IBS, your dietary restrictions compound. The low-FODMAP approach, which is the most evidence-based dietary intervention for IBS, restricts certain carbohydrates, some of which are already limited on a gluten-free diet (wheat-based fructans) and some of which are not (lactose, certain fruits, onion, garlic). Managing both simultaneously requires careful planning.

If you have coeliac disease and diabetes, you face the challenge that many gluten-free substitute products have a higher glycaemic index than their wheat-based equivalents, because refined rice and potato starches are absorbed more rapidly than wholegrain wheat.

These overlaps are where personalised scoring becomes genuinely necessary, not just convenient.

How MyFoodFit handles coeliac disease

The coeliac profile in MyFoodFit does several things that a simple "contains gluten / does not contain gluten" binary cannot.

Allergen detection uses word-boundary-safe matching with false-positive exclusion. The ingredient text "buckwheat flour" does not trigger a gluten alert despite containing the word "wheat." "Gluten free" stated on the label suppresses all gluten and wheat matches. This sounds obvious, but getting it right requires careful engineering. A system that flags buckwheat as containing wheat is worse than useless because it destroys trust.

The scoring goes beyond safety. A product that is gluten free but made entirely from refined starches, high in sugar, and low in fibre will score lower than a gluten-free product made from wholegrains with good fibre and protein content. Safety is the floor, not the ceiling. Once we have established that a product is safe for you, we score it on whether it is actually good for you.

Micronutrient modifiers reflect coeliac-specific needs. Iron, calcium, folate, and fibre all receive boosted importance in the coeliac profile, reflecting the specific deficiency risks of the condition.

Multiple conditions stack. If you have coeliac disease plus IBS, both profiles run simultaneously. A product that is gluten free but high in FODMAPs will have its score adjusted to reflect both constraints. You get one number that accounts for your full picture.

Building a better gluten-free diet

The goal is not just avoiding gluten. It is building a diet that is both safe and nutritionally complete. That means:

Prioritise naturally gluten-free whole foods over substitute products. Base meals around rice, potatoes, quinoa, buckwheat, meat, fish, eggs, vegetables, and legumes.

When you do buy substitute products, choose those made from wholegrains (brown rice flour, buckwheat flour, oat flour from certified GF oats) over those made from refined starches.

Pay attention to fibre. It is the nutrient most commonly lacking in gluten-free diets. Add ground flaxseed to yoghurt, eat vegetables with every meal, choose brown rice over white, and include lentils and beans regularly.

Get your iron, calcium, and folate checked annually. This is standard practice recommended by NICE for people with coeliac disease, but not all GP practices are proactive about it. Ask for it.

Take vitamin D. Everyone in the UK should, but people with coeliac disease have additional reason given the malabsorption history.

Coeliac disease is a serious autoimmune condition that requires lifelong dietary management. But "managing" it should not mean surviving on a restricted, nutritionally inferior diet. It should mean eating well, with full confidence that what you are eating is both safe and genuinely nourishing.

---

Coming soon to the App Store. Register your interest for early access.

This content is for information only and does not replace medical advice. If you have been diagnosed with coeliac disease, work with your gastroenterologist and dietitian on your dietary management plan.