This is a worrisome book that appears to be a vendetta against chiropractors by the authors. I am a health and fitness specialist, researcher and performer. I am non biased in my approach for growing and learning about health, but this book clearly did not have a balanced approach to it's arguments. I don't mind someone having a go at a profession, technique or individual but you must be able to back it up with scientific or another form of substance. The authors make mention of one death( via neck manipulation) during the 3 years of compiling the book and are appalled yet make no mention of the fact that thousands upon thousands of people have died from modern medicine in the same period. They seem to have no problem with any other health service other than Chiropractic. Do not waste your time with this book.