Instruct: Classify a given Amazon review as either positive or negative.
Query: Review

As a nurse of 20 years, I can tell you that this book is totally NOT based on nutritionally sound principles. As a matter of fact, some of the recommendations in this book are appalling and down right dangerous! There are not NO recommendations in this book that are supported by medical doctors, and/or nutritionists of any kind. Not impressed with this book at all.....returned it the next day!