sentences:  The authors claim that advertising for these drugs is deliberately misleading and uses a variety of dishonest techniques from false testimonials to fake experts.The authors also question the value of statements made by scientists who vouch for the safety of products, citing the example of a dean of the College of Pharmacy of Columbia University who had vouched for the safety of a drug that later proved fatal to many.In the final analysis, the authors encourage consumers to be more active and questioning in their purchasing habits.