I was intrigued by the one star reviews before purchasing this book because they were mostly physicists or those knowledgeable of physics who gave it scathing reviews. Luckily I was not swayed by their opinions and went ahead with my purchase. For me this is a very well written and interesting account of a medical practitioner's evolution from traditional to alternate treatment. The only fault in the book I can see, from the point of view of one star ratings, is the choice of the title with the word quantum in it. I think this must have created some sort of expectation of medical treatment via quantum theory which is a far cry from the treatment being promoted in the book. For me it was so much more than an analogy using our understanding of quantum physics and the similarities to the workings of the human body and physical reality. For me it was instructional on the workings of both normal and diseased human physiology and the associated psychology. I can relate to the many accounts of the association between contracting and battling with serious illness and mental outlook as well as physical deterioration via "old age". It doesn't surprise me that the one star raters were not able to recognize themselves in the book. Hint: If you go walking through the woods on a warm autumn day, some of us will feel the leaves under our feet and smell the ripe dank earth and watch the light as it plays in the branches overhead. Others will only be aware of the stark physical elements whether that be the smell of the argon and xenon gases or the frequency spectrum of the sunlight. Not that I'm ignorant of science especially physics but it is a limited field and does not really overlap with psychology, which to me is the main theme of this book. One of the best $4;00 I've ever spent.