Man: "My doctor told me to take Centrum Silver a few years ago. Now, I hear that there's been a study on the effects of vitamins. The vitamin they used? Centrum Silver. Guess my doctor is pretty smart!" Tagline: "Most studied." The ad campaign is, I think, a work of diabolical genius: of course having been studied doesn’t mean the results of the studies were good! But as other studies have shown, advertising an irrelevant attribute can increase consumers’ favorability towards a product even when it’s explicit that the attribute is irrelevant. And I don’t think this actually allows an escape from regulation: the clear implication—the necessary implication, if you will—of this claim in an ad is that the studies produced favorable results for Centrum Silver. H/T ST.