Ads produced by super stars undoubtfully have a great EFFECT on selling products; but those ads seem have flowery phrases that exaggerate the efficacy of products, which are less credible and less scientific. Sometimes customers are MISLEAD to buy these goods without consideration, resulting in detrimental effects on their health. There was a report that some people bought a kind of weight-loss medicine ENDORSED by a famous person, AND AFTERWARD THEY n suffered from renal failure.