Sometimes, I think that I read too much but this little article made me do a double take. One woman plagued with migraines and another with dermatitis. I'll leave you to quickly peruse through the article. Perhaps it might be worth obtaining a copy of the actual book from the local library. There is an extremely long list of ailments that it lists as being able to help including coeliac.
The initial article was in the Mirror newspaper:
mirror.co.uk/news/real-life...
Here is The Resolution Magic site and the list of symptoms: