Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A big disappointment

I received this book as a birthday gift from my family, and I figured I'd give it a shot. My parents were really excited about the book, as they had see Rubin on several shows plugging the book. Unfortunately though the book is very much like an infomercial with very little on the actual application or foods of the diet until the last 100 pages or so.Alot of the information is more common sense than anything else: stay away from processed foods, sugar, junk food etc. Also the foods recommended and the places listed in the book to order the food from are rather expensive and the recipes are more time consuming than I would have hoped.If you can afford the diet, and have the time and energy to follow it you will be healthier for it. However, I don't see the need to purchase the book or other instructional products to do so.