I've read many excerpts of his book but not the book directly. I disagree with him from a philosophical viewpoint. Some of his anecdotal examples may be true and there may be ways to help the brain heal but he mixes too much non-science with a little bit of real science. His claims about curing MS and Parkinson's and a few others are a bit out there.

Did you realize that Dr Kahn manufactures and sells/distributes the laser systems he so strongly espouses ? Quite a conflict of interest.