Bloating after meals, unexplained fatigue, skin breakouts, persistent headaches — these could all be signs of food intolerance. Unlike food allergy (which involves the immune system and can be life-threatening), food intolerance involves the digestive system and produces slower, more diffuse symptoms that are often harder to identify and easier to attribute to other causes.
The Key Distinction: Allergy vs Intolerance
A food allergy triggers an IgE-mediated immune response — typically rapid (minutes to two hours), potentially severe, and involving identifiable immune markers. A food intolerance is a digestive response without immune activation — typically delayed (hours to days), dose-dependent (small amounts may be tolerated while large amounts cause symptoms), and producing no detectable antibodies on standard allergy tests. This is why standard allergy testing often fails to identify food intolerance triggers — it's testing for the wrong mechanism.
Common Food Intolerances
Lactose intolerance — affecting approximately 65% of adults globally — is the most common, caused by insufficient lactase enzyme activity. Symptoms (bloating, cramping, diarrhoea) are dose-dependent and typically manageable through portion control rather than complete avoidance. Non-coeliac gluten sensitivity produces symptoms similar to coeliac disease without the intestinal damage or immune markers — management is similar (gluten avoidance) but the biological urgency is lower. Histamine intolerance produces reactions to histamine-rich foods (aged cheese, red wine, fermented foods, processed meats) through insufficient diamine oxidase enzyme activity. FODMAP sensitivity — now understood to underlie many cases attributed to "gluten sensitivity" — involves fermentable carbohydrates producing gas, bloating, and altered bowel habits.
Testing and Identification
The gold standard for identifying food intolerance remains an elimination diet followed by systematic reintroduction — eliminating suspected trigger foods for 2-4 weeks, then reintroducing one at a time with careful symptom monitoring. Commercial "food intolerance tests" (IgG antibody panels) are not clinically validated and are specifically not recommended by UK allergy specialists — positive IgG reactions indicate exposure to foods, not intolerance to them, and these tests produce unreliable results that lead to unnecessary dietary restriction. GP referral to a registered dietitian is the appropriate route for suspected food intolerance if self-management hasn't identified triggers.
Fresh, Nutritious Food Near St Paul's
For City workers in EC4 and throughout central London, Vanda's Kitchen offers a freshly prepared daily lunch that reflects the nutritional principles covered in this article. Our menu is built around protein-rich options, complex carbohydrates, and abundant vegetables — designed to support afternoon energy and focus rather than contributing to the post-lunch slump that affects so many professionals.
Our completely nut-free kitchen and full halal certification mean the most common dietary requirements are met as standard. Whether you're managing a food allergy, following halal dietary practice, or simply want genuinely good food from an independent kitchen, we're open for breakfast and lunch service in EC4, and available for corporate delivery across the City and central London.
Safe Food at Vanda's Kitchen
For people managing food intolerance, Vanda's Kitchen near St Paul's Cathedral EC4 provides a genuinely safe food option in the City of London. Our kitchen is 100% nut-free — no nut products of any kind are present in our facility — and we are certified halal. Every item we produce is fully allergen-labelled with all 14 mandatory UK allergens, in compliance with Natasha's Law. Our 5-star food hygiene rating confirms independent verification of our food safety standards.
For corporate catering where allergen management is a priority, our approach eliminates the cross-contamination risks that make "allergen-friendly" claims from mixed kitchens unreliable. Read our complete guide for the full detail on our allergen management standards.
For related reading, see our posts on the 14 UK food allergens guide and dairy-free diet guide. For corporate catering enquiries, WhatsApp us or send an enquiry.
Safe, Inclusive Food From Vanda's Kitchen
For Londoners managing food allergies and intolerances, Vanda's Kitchen near St Paul's Cathedral EC4 provides a genuinely safe food environment in the heart of the City. Our kitchen is 100% nut-free — no peanuts or tree nuts enter our facility under any circumstances — and our food is certified halal by the independently verified Halal Friendly List. Every item is labelled with full allergen information covering all 14 mandatory UK allergens, in compliance with Natasha's Law.
Our 5-star food hygiene rating confirms that our food safety practices are independently assessed and verified. Our Selfridges Food Hall presence confirms that our food quality meets the standards of one of London's most demanding food retail environments. For people managing serious food allergies, this combination of safety and quality is rare in the London food market. Visit us in EC4, order corporate delivery via our team lunch page, or WhatsApp us to discuss your requirements. Read our allergy-friendly catering guide for more.
Why London Professionals Choose Vanda's Kitchen
Whether you are managing dietary requirements for a team, looking for a nutritious daily lunch, or sourcing catering for a corporate event, Vanda's Kitchen near St Paul's Cathedral EC4 provides a consistent answer. Our kitchen is 100% nut-free as a permanent standard — no exceptions, no special requests needed. We are independently certified halal through the Halal Friendly List. We hold a 5-star food hygiene rating and our products are stocked in Selfridges Food Hall.
Our food is freshly prepared daily from our EC4 kitchen, rooted in Filipino culinary tradition and designed to deliver both nutritional quality and genuine flavour. For corporate lunch delivery, team catering, and event food across London, we offer a complete solution with the allergen credentials, dietary certifications, and food quality that London's most demanding clients require. View our team lunch options, WhatsApp us, or send an enquiry — we respond the same day.