Instruct: Classify the given review as either positive or negative.
Query: More Sales than research

This book seems be based on research done by other doctors who do not own a supplement company.The advice is very good, although copied, but the supplement advice is to be taken with a grain of salt, (figure of speech)The supplements sold by Dr. Whitaker's company are much higher priced than the exact same supplements sold by other reuptable supplement comapanies like Puritan's Pride, The viatamin Shoppe, Swansons vitamins etc.I prefer other books on this subject sold by amazon, and written by reputable doctors doing research for heart clinics rather than a book written by a doctor who runs a commercial research instutite which is also a supplement company.Elwin Bagley