I came across this book having listened to Get the Edge by Anthony Robbins, who's nutrition advice is based on the principles contained within it - all be it that he does not perhaps go to the extremes the book suggests.
I was sick of feeling 'lethargic' all the time and not knowing how to counter balance this, so decided to get it and see. At first I was shocked by the information and a little worried that I was apparently now not allowed to eat nearly all the food types I love. I have decided to give it a go though and have been very happy with the results so far. Feeling more energetic, with none of my previous Irritable Bowel Syndrome symptoms evident now. This is only 2 1/2 weeks since starting and I have cheated for a couple of meals at weekends, but so far so good - I have also lost half a stone in weight (7 lbs).
The other reviews on Amazon range from great to sceptical and appear to miss the point that the book suggests taking the advice to a higher level of rigidity depending on your symptoms. This makes sense to me. Any cure to any illness will surely work better if aplied 100%, rather than 75% for example - this is no different. The book shows you how to test your acidity and assumedly if you start becoming too Alkaline (though I feel this must be very difficult with it taking some 20 times more alkalinity to counter balance any acid forming food - If I understood correctly!) you can change your diet accordingly. It does state that the PH balance of the blood and organs are critical within a few 100ths of a ph point, so sensibility must prevail when testing yourself. [Not sure on how accurate self testing is?]
So whilst perhaps a daunting prospect, to learn to eat a vegan style diet whilst combining foods correctly, I am sticking with it. I was glad that there is none of the usual weighing and measuring of food, more simply going on the percentage by volume on your plate, by which to judge your intake. This simplifies things and also there are a number of helpful recipies and information on what to eat, why to eat it and what the benefits are.
At the end of the day, it comes down to how much you want to apply the principles given to fight your symtpoms - which is obviously down to the individuals desire to change how they feel.