🥜 Early Allergen Introduction Prevention Simulator

Identifying High-Risk Infants Before Allergen Introduction

Eczema severity and early egg allergy are the main risk-screening signals.

• ~3x: Severe eczema risk (higher peanut allergy odds)
• Strong: Egg allergy link (co-occurs with peanut risk)
• 4–6mo: Screening age (evaluation window)
• Recommended: Specialist referral (for severe cases)

Risk screening basics

Placeholder: eczema and egg allergy history guide risk stratification.

The 4–6 Month Early Introduction Window

Introducing allergens within this window is linked to lower allergy rates.

• 4mo: Window start (earliest recommended)
• 6mo: Window end (optimal upper bound)
• Gradual: Delay risk rise (per month delayed)
• Purees: Format (age-appropriate textures)

Why timing matters

Placeholder: earlier gut exposure aligns with immune tolerance development.

Oral Tolerance vs Sensitization Pathways

Gut-associated lymphoid tissue shapes tolerance or allergic sensitization.

• Favored: Treg induction (by oral route exposure)
• Sensitizing: Skin exposure (via eczema-damaged skin)
• Key model: Dual-allergen theory (gut vs skin exposure)
• Th2→Treg: Cytokine shift (with early oral exposure)

Immune mechanism summary

Placeholder: oral exposure route favors regulatory tolerance signals.

LEAP Study — Landmark Evidence for Early Introduction

The LEAP trial demonstrated dramatic peanut allergy risk reduction.

• ~81%: Risk reduction (in high-risk infants)
• ~640: Trial size (infants enrolled)
• 2015: Publication (NEJM, Du Toit et al.)
• LEAP-On: Follow-up (confirmed durability)

Study highlights

Placeholder: early peanut introduction sharply cut allergy incidence.

Placeholder: LEAP reshaped global infant feeding guidelines.

Practical Steps for Safe Allergen Introduction

Stepwise, monitored introduction supports safe early exposure.

• Small: Start amount (gradually increasing)
• Regular: Frequency (sustained exposure matters)
• Reactions: Monitoring (observe after each try)
• Pediatrician: Consult (for high-risk infants)

Caregiver guidance

Placeholder: introduce small amounts consistently and watch for reactions.