from Childrens Health Defense:

Two in five U.S. children and nearly half of adults with a food allergy are allergic to multiple foods, according to new research which also found that as the number of food allergies a person has increases, so does the effect on their physical and psychological health.

Two in five U.S. children and nearly half of adults with a food allergy are allergic to multiple foods, according to research published last month in the Annals of Allergy, Asthma and Immunology.