Dietology & Therapeutic Nutrition Consultation

Jan Zerzán's work in dietology is rooted in a fundamental insight from his own experience: that the food most people eat without apparent immediate reaction can nonetheless silently inflame the intestinal lining, suppress immune function, and contribute to a wide spectrum of chronic disease — from skin conditions and allergies to fatigue, weight dysregulation, and autoimmune disorders. His consultations translate this insight into a practical, testable,…

The consultation begins with a thorough dietary and symptom history: what the patient eats, when, in what combinations, and how symptoms correlate with food patterns over time. Zerzán then conducts hands-on individual food sensitivity testing — a form of applied kinesiology or manual muscle testing that identifies which foods create a stress response in that particular person's system. This produces a personalised list of foods to avoid (even temporarily)…

The elimination phase removes the identified triggers — commonly gluten-containing grains, specific dairy products, certain fruits or nightshades, or foods with high lectin content — while introducing anti-inflammatory and gut-supportive alternatives. The goal is not permanent restriction but a staged rebuilding of intestinal integrity, after which foods are reintroduced methodically and tolerance assessed.