Frequently Asked Questions

A food allergy involves an immune system response where your body mistakenly attacks proteins in a food as harmful. This can trigger immediate reactions ranging from mild itching to severe anaphylaxis. Food intolerance, by contrast, is a digestive issue where your body struggles to break down or absorb certain foods—it doesn't involve the immune system and typically causes delayed discomfort like bloating, gas, or stomach pain. Understanding which you have is essential for managing your diet safely.

The UK recognises 14 major allergens: peanuts, tree nuts, milk, eggs, fish, shellfish, sesame, mustard, celery, lupin, soya, sulphites, molluscs, and cereals containing gluten. These must be clearly labelled on packaged foods. Beyond these, common intolerances include lactose (found in dairy) and histamines (in fermented or aged foods). Many people also experience issues with additives like artificial colours or preservatives. Always check ingredient labels carefully and ask restaurants about preparation methods to avoid cross-contamination.

Non-dairy sources of calcium are abundant and nutritious. Leafy greens like kale, spinach, and broccoli provide significant amounts, though some contain oxalates that can reduce absorption. Fortified plant-based milks (soya, oat, almond) are excellent alternatives and often contain as much calcium as cow's milk. Other sources include tahini, almonds, sardines with bones, tofu made with calcium sulphate, and fortified juices. Aim for 700mg daily by combining varied sources throughout your meals.

Many whole foods are naturally gluten-free: all fruits and vegetables, rice, quinoa, potatoes, meat, fish, eggs, beans, lentils, and honey. The key is avoiding processed foods where hidden gluten lurks in sauces, seasonings, and additives. Read labels carefully on packaged items, as cross-contamination during manufacturing is common. Look for the certified gluten-free symbol on bread, pasta, and baked goods if you're coeliac or have gluten sensitivity. When dining out, communicate your needs clearly and ask about preparation practices.

No—peanuts are legumes (related to beans), while tree nuts include almonds, cashews, walnuts, hazelnuts, and others. These are distinct allergens, and someone allergic to peanuts may safely eat tree nuts, or vice versa. However, roughly 25-40% of people with peanut allergy also have tree nut allergy, so if you have one, discuss testing for the other with your healthcare provider. Cross-reactivity and contamination during processing mean careful label reading is essential for both groups.

Restaurant dining requires communication and preparation. Inform your server immediately about all your allergies, not intolerances—many restaurants take allergies very seriously. Ask to speak with a chef or manager who can confirm ingredient sources and preparation methods. Request modifications: ask for sauces on the side, confirm oil type, and clarify seasonings. Bring a translation card if dining in unfamiliar restaurants, detailing your allergies in the local language. Choose simpler dishes with fewer ingredients. Many UK chains now provide detailed allergen menus online—review these before booking.

Eggs serve multiple roles in baking—binding, leavening, and moistening—so substitutes depend on the recipe. Applesauce, mashed banana, or yoghurt work well for moisture in cakes and muffins. Aquafaba (chickpea liquid) mimics egg whites beautifully for meringues and mousses. Flax or chia seeds mixed with water create a gel for binding in dense bakes. Baking soda with vinegar provides lift in quick breads. Commercial egg replacers are reliable for most applications. Start with small test batches to adjust ratios, as each substitute behaves differently depending on your recipe's needs.

Yes, food allergies can appear at any age, even if you've eaten a food safely for years. This can occur due to changes in gut health, hormonal shifts, stress, or even underlying illness. Adult-onset allergies are sometimes linked to oral allergy syndrome (cross-reactivity with pollen) or cumulative exposure leading to sensitisation. If you suddenly experience unexpected reactions to a previously tolerated food, keep a food diary, note symptoms and timing, and seek guidance from a healthcare professional. Don't assume you'll outgrow it—adult allergies typically persist, so identifying and avoiding the trigger is essential.

UK law requires the 14 major allergens to be highlighted (usually in bold) within the ingredient list. However, allergens hide in unexpected places: soya appears in many ready-meals and sauces; milk in chocolate, cured meats, and breads; and fish in Worcestershire sauce. Check for "may contain" warnings on packaging, which indicate potential cross-contamination. Be wary of vague terms like "spices," "flavourings," or "additives"—contact manufacturers if unsure. Compare labels between brands, as formulations vary. Apps like FreeFromme can help identify safe products. When in doubt, contact the manufacturer directly—most provide allergen information readily.

With a shellfish allergy, stock proteins like chicken, beef, turkey, and legumes. Fresh water fish such as salmon, trout, and cod are generally safe (shellfish allergy doesn't automatically mean fish allergy, but confirm with your healthcare provider). Use separate utensils, chopping boards, and cooking vessels if others in your household eat shellfish— cross-contamination is a real risk. Avoid sauces containing fish paste, worcestershire, or oyster sauce. Many Asian cuisines use shellfish-based ingredients, so check restaurant menus carefully. Stock your pantry with safe condiments, and label shared items clearly to prevent accidental use of contaminated products.

Plant-based meat substitutes vary widely in allergen content. Many contain soya, which is a major allergen, whilst others use pea protein or other sources. Processed vegan meats often include binders, fillers, and seasonings that may contain milk, gluten, mustard, or sulphites. Always check the label carefully, as manufacturers change formulations. Some brands specialise in allergen-friendly options and clearly label their facilities. For soya-free alternatives, look for products based on pea, chickpea, or mycoprotein. Home-made plant-based patties using beans, lentils, and vegetables offer the most control over allergens and ingredients.

Start by listing all your safe foods across each food group, then build simple meals using combinations. Focus on whole, unprocessed ingredients—they're naturally free from many hidden allergens. Create a template meal plan (breakfast, snack, lunch, dinner) with interchangeable components. For example, rotate safe proteins (chicken, salmon, beans), pair with different vegetables, and vary grains (rice, oats, quinoa). Batch cook and freeze portions for busy days. Use a shopping list organised by allergen restriction to stay focused. Keep a food diary for the first few weeks to identify patterns and new safe foods. Many free apps can help— or simply use a spreadsheet to track meals and ingredients you've verified as safe.