I bought this book thinking that it would give me some dietary guidelines to follow that would help me. What I got was a very small booklet containing gobs of scientific explanations that, quite frankly, had me lost. Though reading about how hearing occurs was interesting, Dr. Yanick got to the end of the book without giving any dietary guideline except a very brief list of "what not to eat with what" and no explanation to go with it. He is also selling an "enzyme" complex, "which can be purchased at local health food stores." To me, this booklet raised more questions than supplied me with answers.