I personally avoid wheat and am healthier for it test wise, and feeling wise also. I think though it is up to the individual. Not everyone is the same. Some will have trouble with wheat, and others not so much.
I have not received my copy of Dr. Davis's new book. Imagine it will arrive soon, and looking forward to reading it.
Along with the book, Dr. Davis does have a blog where he talks about his research for his Wheat Belly book and his experience with patients that eat wheat free that I enjoy checking out. www.wheatbellyblog.com/