Hi Oliva, 
What if it isn't a disease, but a genetic trait that enjoyed a selective
advantage in pre-agricultural times and is now at a selective disadvantage?
Or maybe it is a genetic interaction with an immune reaction to a viral
infection. Or maybe it is a genetically coded reaction that is "switched on"
either by elevated blood glucose or the consequent reduction in glucagon,
nocturnal growth hormone, insulin-like growth hormone, etc. secretion due to
excessive insulin.  Or maybe it is the compound impact of genetic
predisposition with increasing gluten content and increased individual,
daily consumption. Or maybe it is a genetic predisposition combined with a
nutrient deficiency such as the situation with pellagra. 

I think I could go on all day, but you probably get the idea. :-)

In short: Who knows? 

Best Wishes, 
Ron


>   Which is it?, the disease was already there or the grains 
> caused the disease.  Oliva
>    
>    
>   INVESTIGATION OF THE HARMFUL EFFECTS OF
>   CERTAIN TYPES OF CEREAL ON PATIENTS
>   SUFFERING FROM COELIAC DISEASE