ummm I find a lot of what is written on this thread a bit bollocky. I read a large study about the atkins diet that concluded that people lose weight because they eat less calories (basically there is only so much fat you can eat before you start feeling sick).
But that said I was ill for four years with ME. Totally ruined my life, lost my job, couldn't look after my kids properly it was hell. People always thought I was pregnant as my tummy would swell (and I wasnt particularly big - size 10ish) . i could barely walk the dog without needing to rest for a few hours. Then someone told me to give up wheat to see if that made a difference.
cut it out totally for two weeks (including spelt as a type of wheat), read every label to see what was in it and by day 10 I was completely better.
I made a few mistakes and would get ill almost instantly for a about a week. Tried gluten free wheat bread that made me very ill.
so now I eat no wheat, rye, spelt and am 100% well.
won't work for everyone though but wheat has been fucked about loads since the 70s (spliced and the amount of gluten has gone up loads), also we eat so much more of it than years ago (I can remember spaghetti being a real rarity).
I would recommend anyone who felt that something they were eating was effecting them badly to completely cut out everylast molecule for two weeks. No improvemnet, start eating again, if better go and talk to your GP and check it's not a bad thing to cut out and find alternatives for.