Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Excellent literature review

Most vegetarian advocates are prone to selective citation of the scientific literature, quoting those studies that support their ethical beliefs, but omitting mention of the science that is contradictory. Sabate's Vegetarian Nutrition does not do this, and is a fair review of the literature. Each area of concern is addressed with a complete review. Does eating meat cause disease or do other factors in the vegetarian lifestyle than abstention from meat confer health protection? Are vegetarians and vegans at greater risk for nutritional deficiencies? Sabate explores these and other questions with thoroughness and integrity.Paul Bergner, Adjunct Faculty in Nutrition, Naropa University