There is another child in my son's class who follows it. She's been to a DAN Dr and everything.
She was the one who told me about the GFCF diet. Her son is making great progress, as I wrote about in my GFCF post. I haven't done the whole thing, only the diet. Oh, and I also use some of the homemade (chemical free) cleansers that she told me about. But my son didn't seem to have as many issues in the first place, so I thought I would just try one thing at a time.