Assoc Prof Elizabeth Tham and Dr Chong Kok Wee on national study on childhood food allergies

Key Concepts:

• Food allergies in Singaporean children
• Prevalence of food allergies
• Impact of food allergies on children and families
• Anaphylaxis (severe allergic reaction)
• Genetic and environmental factors in allergies
• Dietary patterns and processed foods
• Delayed introduction of allergenic foods
• Common allergens (eggs, milk, peanuts)
• Challenges of avoiding allergens in Singaporean cuisine
• Importance of nutrition and allergy prevention
• Community and healthcare industry support
• Public awareness and education
• Early allergy management
• School and childcare center roles
• Safe handling of allergens

1. Scope and Aims of the National Food Allergy Study

• The primary aim is to update the prevalence numbers for food allergies in Singapore.
• Secondary aims include understanding the impact of food allergies on children and their families from various standpoints:
  • Social development
  • Growth
  • Nutritional well-being
  • Mental well-being
  • Economic impact

2. Alarming Increase in Allergy Cases

• Hospitals are reporting an uptrend in allergy cases among children.
• A recent study by NUH (National University Hospital) and KKH (KK Women's and Children's Hospital) showed a doubling of anaphylaxis cases presenting to children's emergencies between 2015 and 2022.
• This doubling is concerning, suggesting increasing food allergy rates and severity.
• This trend is also observed in other countries like Australia, the UK, and the US.

3. Food Allergy as a Chronic Condition

• Food allergy is considered a chronic condition because it persists over time and significantly affects daily living.
• Patients with food allergies require:
  • Long-term avoidance of certain foods
  • Regular medications
  • Carrying emergency treatment like an Epipen

4. Causes of Food Allergies: Complex Interplay

• The cause is a complex interplay of genetic and environmental factors.
• Environmental factors:
  • Cleaner environments reduce children's exposure to microbes, affecting immune system training.
  • Shift to more processed foods and fewer fresh ingredients.
  • Less diversity in diet.
  • Delayed introduction of allergenic foods may influence immune system development.

5. Challenges of Avoiding Common Allergens in Singapore

• Eggs, milk, and peanuts are top allergens and staples in the Asian diet, making avoidance challenging.
• Difficulties dining out due to the presence of these ingredients in many foods.
• Risk of cross-contamination in kitchens and cooking utensils.
• Families may excessively restrict their diets to home-cooked foods.

6. Nutrition and Allergy Prevention

• Parents need to balance providing enough nutrition for growth while avoiding allergens.
• Healthcare professionals educate parents, but it's a struggle to maintain this balance.

7. Role of the Wider Community and Healthcare Industry

• Managing food allergies requires a shared responsibility to create a safer, more inclusive environment.
• Community preparedness can significantly improve outcomes for those suffering from allergic reactions.
• Families hope for better public awareness, allergy-friendly eateries, and clearer food labeling.

8. Public Education and Early Allergy Management

• Increasing awareness of what food allergies are, how they present, and their severity is crucial.
• Schools can play a more active role in prevention.
• Simple measures like washing hands after handling allergens can prevent severe reactions.

9. Plugging the Gap: Community Stakeholders

• Collaboration with community stakeholders (preschool teachers, F&B operators, government agencies) is needed.
• Policies or regulations around safe handling of allergens in schools can be helpful.
• Implementing plans in schools to create a safer environment for children with allergies.

10. Notable Quotes

• Dr. Chong: "Managing food allergies takes a whole village."
• Professor Tam: (Referring to the doubling of anaphylaxis cases) "This doubling is very concerning because it suggests that the food allergy rates are increasing and the severity is increasing as well."

11. Technical Terms and Concepts

• Anaphylaxis: A severe, potentially life-threatening allergic reaction.
• Allergens: Substances that cause an allergic reaction.
• Prevalence: The proportion of a population who have a specific characteristic in a given time period.
• Cross-contamination: The process by which bacteria or other microorganisms are unintentionally transferred from one substance or object to another, with harmful effect.

12. Synthesis/Conclusion

The increasing prevalence and severity of food allergies in Singaporean children are a growing public health concern. The national food allergy study aims to provide updated data and insights into the impact of these allergies. Addressing this issue requires a multi-faceted approach involving genetic and environmental considerations, dietary adjustments, increased public awareness, community support, and collaborative efforts from healthcare professionals, schools, and government agencies.