Thank goodness I only borrowed this book from my library and didn't fork out hard-earned cash for it.
I have always thought of Which? as an impartial and independent champion for conusmer rights, so when I borrowed this book I expected a fair and unbiased read. Don't let the subtitle of the book fool you ("An independent look..."). A quick look at the 'About the author' section states that Helen Barnett is "a practising acupuncturist". Hardly what I would call unbiased. And the list of acknowledgments reads like a who's who in CAM (complementary and alternative medicine). There is not an independent body amongst them. Talk about vested interests!
I was tempted to give this book 1 star out of 5, but, to me at least, it is reasonably interesting in that it does describe a lot of different CAMs. So, 2 out of 5 it is.
In summary, borrow this book from the library (if you must), but do not buy it. And, shame on you 'Which?' - I expected better.