🧪 Nutrition Dietary Restrictions Simulation

Excluding a food group never removes a single nutrient in isolation — it reshapes the whole nutrient profile of everything a person eats. This simulator models how six common dietary restrictions (vegan, gluten-free, dairy-free, nut-free, low-FODMAP, ketogenic) each shift eight key nutrients — protein, iron, calcium, vitamin B12, omega-3, fiber, vitamin D and zinc — away from a 2000 kcal reference omnivore diet, how those shifts compound when restrictions are combined, and how far fortification and thoughtful substitution can close the resulting gaps. Toggle any combination of restrictions, adjust the calorie target and substitution level, and watch the live 3D bar field and adequacy score respond in real time.