In the book that I mentioned earlier, Misdiagnosis and Dual Diagnoses in Gifted Children and Adults, Dr. Webb has a Chapter entitled "Allergies, Asthma, and Reactive Hypoglycemia." (Chapter 8). Here is a quote from page 169:
"Rogers' analysis of data collected by Silverman on children with IQ scores above 160 revealed that 44% suffered from allergies, compared to 20% of the general population and that almost 10% suffered from asthma.
In our clinical experience, approximately 30% to 40% of highly gifted children suffer from allergies, usually to food of some type or to common chemicals. Silverman (2002) concluded from a 20-year clinical sample that the most frequently occurring allergies reported for gifted children were milk and milk products, sugar, corn, chocolate, caffeine, eggs, and red food dye."
I also found a link to an article in Living Without Magazine about corn allergy, if anyone is interested. It discussed allergy-induced autism.
http://www.livingwithout.com/features/vault_corncrazy.html
