Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very positive results following this book.

I have read Dr. McDougalls books and I have been helped immeasurably. My Blood Pressure is down, my cholestral is down, my weight is down, my energy is up, my sinuses are no longer swollen, my Fibro Myalgia pain is down by 90%. I have nothing but thanks for Dr. McDougall for his books, this lifestyle has given me a new lease on life.