Allergy prevention - Current recommendations and new insights.

Area of Science:

• Immunology
• Public Health
• Pediatrics

Background:

• Allergic disease prevalence has significantly increased globally, with Australia experiencing particularly high rates.
• The escalating burden of allergic diseases necessitates effective prevention strategies due to the absence of a cure.
• Underlying factors driving the rise in allergic disease prevalence remain largely unidentified, limiting current prevention approaches.

Observation:

• A family history of allergic disease in a first-degree relative is the sole validated predictor of a child's elevated risk.
• Current evidence does not support maternal dietary restrictions during pregnancy or lactation for allergy prevention.
• Aeroallergen avoidance strategies are not currently recommended for preventing allergic diseases.

Findings:

• Breastfeeding is advised for all infants; partially hydrolysed formula is recommended for high-risk infants when breastfeeding is insufficient.
• Introducing solid foods between 4 to 6 months of age is recommended for infants.
• Delaying the introduction of solids beyond 6 months shows no additional benefit in allergy prevention.
• Insufficient evidence currently exists to support the use of probiotics for allergy prevention.

Implications:

• Allergy prevention efforts should prioritize individuals identified as high-risk based on genetic predisposition.
• Clinical guidelines emphasize tailored prevention strategies focusing on infant feeding practices and early solid introduction.
• Further research is needed to elucidate causative factors and develop novel, evidence-based allergy prevention interventions.