[muawiyah]

I've known several Chippewa Indians over the years. They all had the rotating sensitivity to chocolate, coffee and tea. First you're allergic to one, so you use the others until you get allergic to one of them, then you go back to the other, and so on. Kind of strange but apparantly the angry t-cells have a limited memory on that one.

Lady I worked with had to change from one to the other every few months.

[o_zarkman44]

I have heard that in the study of ying and yang, a ancient Chinese philosophy, that people adapt to locally produced food that are indiginous to the areas they live in. For example, a bananna will have no effect on someone in central America, but may clash with someone in New York.
Pineapple or coconut fine in Hawaii, but not so healthy for someone in Iowa.
American Indians lived off of the local food fare like venison and fish, berrys and nuts. When europeans introduced other foods into the hemisphere, the Indian people started suffering from illness they had never experienced. Their immune systems were adversely affected by food items not indiginous to their local habitat.

I don’t know for certain if this is a valid arguement for health problems. But it certainly in theory could have a bearing on many food allergies based on ethnic heritage.