Risk-based allergen labeling: reference doses, Japan's 10-ppm policy, and emerging challenges

Area of Science:

• Food science and safety
• Allergen management
• Risk assessment

Background:

• Current food allergen management practices
• Japan's 10-ppm threshold and PAL prohibition
• International frameworks for allergen labeling

Purpose of the Study:

• Summarize advances in risk-based allergen management
• Analyze Japan's unique labeling threshold and PAL prohibition
• Contextualize findings within international ED/RfD frameworks

Main Methods:

• Quantitative risk assessment
• Review of international guidelines (FAO/WHO, VITAL 4.0, Codex)
• Analysis of Japanese dietary shifts and allergy prevalence

Main Results:

• Japan's 10-ppm threshold provides a wide safety margin for common allergens but is burdensome for others (e.g., crustaceans)
• International convergence on ED-based RfDs and HACCP-based allergen management
• Shifting nut consumption in Japan necessitates threshold updates

Conclusions:

• Future allergen policy requires integrated thresholds and HACCP-based management
• Anticipate dietary pattern shifts and support harmonized, evidence-based PAL
• Enhance safety and quality of life for food-allergic individuals