"While the National Institute for Allergy and Infectious Disease says food allergies occur in 6 to 8 percent of kids, and about 4 percent of adults, there's a lot of self-diagnosis, overdiagnosis, and just plain misdiagnosis Bahna says."
http://www.npr.org/blogs/health/2010/11/12/131279854/allergy-expert-says-peanut-bans-are-an-overre
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