Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Junk Science, Scientology style

This book is based on pulp fiction author L. Ron Hubbard's imaginary delusions of physiology. Former Surgeon General C. Everett Koop said it better than I could, when asked about this book.Question. What about the author's detoxification advice? He credits L. Ron Hubbard, the founder of Scientology with some of the theories he recommends.Answer. "My recommendation about detoxification is to keep away from it. You don't need it. I'm not sure it does what this book describes. It's dangerous. I don't think L. Ron Hubbard has credibility in the scientific world. The author's suggestions about detoxification can be detrimental to your health. " - C. Everett Koop, M.D.