Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Weight loss surgery

I would recommend this book to any person preparing to undergo gastric bypass surgery or any type of weight loss surgery. It is very informative, helpful, and prepares you for what to expect and explains so much more beyond what the doctor's tell you. Information is power and this book gives you the power and the information to make a very informed decision about your body and your future. I would highly recommend this to everyone considering this type of surgery to help in the decision making process and beyond even after surgery. The author has been through the surgery herself and gives many helpful suggestions and lots of information necessary for before and after the surgery. Would highly recommend this book.