We have three children, all with some degree of food intolerance. My husband and I as well. Of all the families of identified gifted children I know personally the vast majority have gut issues, food issues, autoimmune issues or all three in the family, usually with gifted child, but not always. Off the top of my head the incidence is 100% in the 2E families. Of my own children my child with the most severe food intolerance is too young to test, but at a guess is the most gifted and may luck out and be the only non-2e child. But she has NEVER eaten a normal diet in her life and when we have a diet mistake I see a child that would not be developing normally on a normal diet.