The book is everything else but what one would expect to get judging by the title and the infomercial. Kevin Trudeau constantly refers to his website where one supposedly would get full explanation for various topics. The only problem is that no one can get any explanation free of charge. Once you land at the website, you will realize that there is almost nothing that you could learn unless you come up with some kind of payment!
Otherwise the book has some valid (and valuable) information. However, there are many other books at the market that discuss natural cures, stress reduction methods, proper nutrition, proper breathing techniques, yoga, etc. They are often not only much more informative but at the same also cheaper. Just look around Amazon and you will find them. I find the best alternative to "Natural Cures" are books by Tombak such as "Cure the Incurable" or "Can We Live 150" . They are absolutely noncommercial and full of useful info. In addition, their website - StartHealthyLife - is not only free of any charges but also provides some free ebooks on simmilar topics.