Though severe peanut allergies are extremely uncommon, many parents want to know how to prevent them.
One widely held theory -- endorsed by the American Academy of Pediatrics -- is that allergy might be avoided if the mother stays away from peanuts and other likely food allergens during pregnancy and breastfeeding and that children shouldn't be given them until at least 2 years of age. But supporting research is absent.
The best study, published in The Journal of Allergy and Clinical Immunology in 1995, showed that a strict maternal diet coupled with delayed introduction of allergenic foods had no impact on long-term risk of ''food allergy, atopic dermatitis, allergic rhinitis, asthma, any atopic disease, lung function, food or aeroallergen sensitization, [or] serum IgE level."
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