Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Impressive, informative and well done!

I bought this book while waiting for a flight at an airport in North Carolina. Although the title uses the word "Diet," this is anything but just another diet book. This book is a tell all, information packed guide explaining the physiology of your body and its reaction to food. The authors are, at times, both whimsical and witty while providing fact based information and the tools to make informed choices. I recommend this book to anyone.