Unbiased Science Food Allergies: A Tough Nut to Crack
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Mar 4, 2026 Dr. Farah Khan, double board-certified allergist and immunologist who treats children, breaks down food allergies, intolerances, and sensitivities. She tackles testing myths like IgG panels and explains assessment methods. Listeners hear about treatments from avoidance to oral immunotherapy, the gluten and alpha-gal controversies, and links between eczema and allergy risk.
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Prioritize Clinical History Over Panels
- Use clinical history first when assessing suspected food allergy; the story of the reaction guides testing and management.
- Farah Khan asks detailed questions about amount eaten, preparation, timing, symptom onset, duration, and healthcare utilization before ordering IgE tests.
Do Not Buy IgG Food Tests
- Avoid paying for at-home IgG food sensitivity tests; they measure exposure, not harmful reactions.
- Farah Khan calls the IgG tests a scam that show you've eaten a food before and do not diagnose intolerance or IgE allergy.
Early Introduction Can Prevent Some Allergies
- Early oral introduction of allergens can prevent some food allergies, a practice driven by the LEAP trial results.
- Farah Khan highlights introducing peanut in infancy and supervised oral immunotherapy as immune retraining strategies in young children.