I read a version of this book, not sure which version. (It was orange and white). I'm not a homeopathic person, but lately, I've made some changes in my food and lifestyle that have impacted how I feel. The section of this book on fungus links to several diseases made a lot of sense to me. Fungus is not what caused some of my problems, so I can't share a testimonial on how great the theory works. But I can say Kaufmann's points made a lot of sense to me. I read this, along with many others, that helped me decide how to make changes. I avoid processed foods whenever possible as well as gluten. It's complicated, but am happy to share more on what worked for me. Worth a read though.