Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Forever Ageless: Advanced Edition

I've been practicing Vitality and Longevity Medicine for 10 years, currently in Denver, CO. Doctor Rothenberg is highly renown in our field, a leading lecturer, innovator and thoughtful practitioner. His book is no less spectacular. This is a must-read for any practitioner of preventive medicine, hormone replacement or "Anti-Aging Medicine". Moreover, it is a superb read for the patient who wants to underst and maintain excellent insight into the science behind his therapy. Dr. Rothenberg's explanations, algorithms and illustrations are indispensable. I highly recommend this outstanding book for anyone who wants to live better, longer!