Understanding Food Allergy Risk Factors: Current Knowledge and Recent Advances Using a Large Retrospective Cohort...

Area of Science:

• Pediatric Allergy and Immunology
• Public Health Research
• Artificial Intelligence in Healthcare

Background:

• Immunoglobulin E-mediated food allergies (FA) represent a significant and increasing public health issue in Western countries.
• While established risk factors exist, they do not account for the majority of FA cases, necessitating further research into novel contributing factors.
• Existing knowledge gaps highlight the need for comprehensive analyses to uncover additional determinants of FA development.

Purpose of the Study:

• To identify novel risk factors for food allergies (FA) by analyzing a large-scale healthcare database.
• To investigate the correlation between early-life variables (first 6 months) and parental factors with the diagnosis of FA.
• To leverage explainable artificial intelligence (AI) for uncovering previously unrecognized associations in FA etiology.

Main Methods:

• A retrospective cohort study design was employed, utilizing de-identified data from Clalit Health Services, Israel's largest healthcare provider.
• Explainable artificial intelligence (AI) methodologies were applied to analyze a comprehensive dataset of children born between January 1, 2006, and August 31, 2021.
• The study focused on identifying correlations between specific variables in the first six months of life, parental factors, and the subsequent diagnosis of FA.

Main Results:

• The study analyzed data from 370,298 children, identifying FA in 1.87% (6,911 infants).
• Significant risk factors for FA included high socio-economic score (Relative Risk [RR] = 9.92), Jewish ethnicity (RR = 3.83), and a personal history of atopic dermatitis (RR = 5.3).
• Other associated factors included parental atopic conditions, blood type, and medication use (antibiotics, anti-acid drugs), while prematurity and low birth weight showed a negative correlation with FA risk.

Conclusions:

• The identified risk factors, including socio-economic status and ethnicity, do not fully explain the incidence of FA and may be influenced by cultural behaviors.
• The study underscores the need for further research to establish causal relationships and the clinical significance of the suggested risk factors.
• Limitations include the unavailability of data on the timing of allergenic food introduction, which could provide further insights into FA development.