There is a sort of parallel thread running in the Clydesdale and Athenas forum at the moment, discussing some of the issues:

http://www.bikeforums.net/showthread...g-Clean-Anyone

cyccommute makes some interesting points about human evolution. goldfinch also has an excellent post in there. Note that they are not specific to endurance athletes.

The comments there about regional evolutionary differences is diet are, to my mind, important, and may go along way to explaining why some people are celiacs (based on their forebears never having come into contact with glutenous grains), and why others are not (based on their forebears always eating glutenous grains).

One of the problems also seems to me to be that these issues of food sensitivity are occurring in a relatively small segment of the population, yet there is a campaign for everyone to adopt the solutions. In other words, I am being told I have to do this, and I have to do that, when really, I don't have any problems to solve (except my over-indulgence, which is a brain issue...).