The only sure-fire way to extend a person's life is by _underfeeding_. Why is this so ?? Could it be that foods are killing us ?? The answer is definitely YES, foods ARE killing us, in more than a dozen different ways, and the reasons are clearly and thoroughly explored in this book.
Dr. Fuhrman is a medical doctor, and a former olympic ice skater who overcame an injury that was almost fatal to his olympic career, via fasting. In this book, he explains some of the benefits you can gain from fasting, and he explains exactly why you should not engage in fasting for more than 3-4 days without going to a medical clinic.
This is not a book to help you plan a fast. This is a book that can help to motivate a fast and to motivate more healthy eating. This book has a few very critical pieces of information (e.g. never eat between zero and 1200 calories because above 1200 calories you have enough carbohydrates -> glocose for your brain, and at zero calories your brain converts to ketosis and has enough glucose, but between 0 and 1200 calories your brain and organs compete for cabohydrates and you can easily damage your internal organs.)
The book is so motivational that I think many people will try unsupervised fasting after reading this book. I think the doctor should admit that his book will be too successful, and he should give a few more tips about how to run a short unsupervised fast, or what entry criteria / monitoring could be used for a short and self-supervised fast. That's the only flaw in this book.