Nutrition Dietary Restrictions Simulation

Dietary Restrictions

Diet Parameters

Daily calorie target 2000 kcal

Substitution & fortification 0%

Adequacy score

100%

Weakest nutrient

—

Active restrictions

None (standard omnivore)

Nutrient Adequacy (% of reference)

How it works

Each nutrient starts at a baseline adequacy of 100%, calibrated to a 2000 kcal/day reference omnivore diet that fully meets recommended intake. Every restriction you toggle multiplies specific nutrients by an impact factor f (0–1 = deficit, >1 = surplus) drawn from how that exclusion pattern actually shifts food choice:

Vegan       → B12×0.05, Omega-3×0.3, Iron×0.6, Calcium×0.7, Zinc×0.7, Fiber×1.3
Gluten-Free → Fiber×0.75, Iron×0.85
Dairy-Free  → Calcium×0.55, Vit D×0.7
Nut-Free    → Omega-3×0.85
Low-FODMAP  → Fiber×0.7, Calcium×0.85
Ketogenic   → Fiber×0.5, Protein×1.1, Iron×0.95

Combined restrictions compound multiplicatively: F = f₁ × f₂ × … (clamped to [0.05, 1.6]) — stacking exclusions compounds the same nutrient gap, which is exactly why clinically-supervised multi-restriction diets need closer monitoring.

Substitution s ∈ [0,1]:  F' = F + (1 − F) × s × 0.7   (F < 1 only)
Calorie scaling:          intake% = F' × 100 × (kcal / 2000)

The substitution/fortification slider models real-world compensation — fortified plant milk for calcium, B12 supplements, algae-oil omega-3 — which closes part but never all of a gap (capped at 70% recovery). The calorie slider scales absolute nutrient intake proportionally to how much food is eaten. The adequacy score is the mean of all eight nutrients' intake%, each capped at 100% before averaging so overshoot in one nutrient can't mask a deficit in another.

Deficient (<60%) Marginal Adequate (≥85%)

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