It would be more likely your friend has gluten intolerance - http://en.wikipedia.org/wiki/Dermatitis_herpetiformis
If this is the case then cutting down on cereals would be standard medical advice rather than a wonder effect of an unsound diet.
If this is the case then cutting down on cereals would be standard medical advice rather than a wonder effect of an unsound diet.
And, yes, those with celiac disease are particularly obviously effected.