Genetics and ... ?: We don't know what causes food allergies but people with food allergies often come from families where allergies of any sort are more common. Milk allergiy is not necessarily more or less common than other food allergies. Common food allergies in children are soy, egg, and milk, whereas older children and adults are more often allergic to nuts, peanuts, fish, and shellfish.
Answered 3/26/2013
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