Instruct: Classify a review into positive or negative sentiment.
Query: Another Viewpoint On Obesity

The author presents a provocative view on the public-health issue of obesity. The book makes the case that moderately overweight persons may not be at risk if they are physically active and eating a healthful diet. The author shows how a moderately active heavier person is likely to be far healthier and live longer than someone who is thin but sedentary.In addition, the book shows how a common problem of yo-yo dieting is more dangerous than not losing the weight in the first place. The book in many ways points out that the steps that people take to lose weight can be more dangerous than the excess weight itself. One example of this is the story of Fen-phen which is explained in the book.