The problem is, celiac/gluten intolerance causes vitamin and mineral deficiencies which in turn causes other issues to develop. I do not think they have figured out what causes fibro, yet thyroid issues and celiac/glutenintolerance go hand in hand. Just google celiac/gluten intolerance symptoms and you will find a list you will not believe of connections between it and so many other issues. I have small fiber sensory polyneuropathy directly related to the deficiencies I suffered because of gluten. I also have gluten ataxia, candida, and leaky gut, all related.
Gluten is evil, and now, it's even worse than it used to be. Wheat these days has 80% more gluten in it then it did when wheat was first discovered. Genetically modified foods are the worst thing a person could be eating.