Instruct: Classify an Amazon review as either positive or negative.
Query: The only kindle book I've ever returned

Other reviews have already covered my complaints, I just wanted to add my 1-star. This book is so full of incorrect bad science, myths, and eating-disorder style statements that it is hard to take any part of it seriously. This is the sort of thing vegetarians/vegans don't need- like another reviewer said, I'd hate for this to be someone's first introduction to veganism, because it is strident, preachy, and full of misinformation.