Ya know, I really like this book.
However, I do think the author has a little "attitude" about him. His attitude: If you follow his program (having to do with dietary triggers) than you will no longer have headache pain.
However, it has been my experience (both with myself and observing other people) that often times it takes a variety of significant and major efforts to curb a chronic headache problem. Many chronic sufferers do need medical intervention (like the preventative medication (s)).
That being said, I wouldn't want to discourage anyone from purchasing this book or getting it from the library. I DO actually feel that this Dr. makes excellent points. He talks about how certain foods can lead to headache pain and how sometimes it takes a combination of triggers (trigger foods in combination with other events) to creat a headache. IMHO, it is a worthwhile read and can be helpful information.