- Video Commercial: http://youtu.be/Y_O-djDJjIg
-The claim of weight loss: http://www.xenadrine.com/
This claim states that it's shown that 7 times more weight is lost when taking this diet pill compared to people just dieting alone. This is an extraordinary claim, and there isn't extraordinary evidence to prove this. It even says at the bottom that the Food and Drug Administration have not evaluated the statements. Also, they have success stories, but are they able to replicate these successes over and over again... most likely not. Does correlation mean causation? Different successes could have been due to the amount of exercise they did when taking the supplement, or the amount they ate. They have a celebrity as a success story. That just tricks people into buying the product, because a lot of people will think they will get muscles like that if they take the product, which in reality, muscle comes from working out.
People could believe it due to naïve realism. They see these skinny, muscular, fit people (sometimes famous) talking about how this supplement helped them get their dream body. This leads people to believing that it's all because of this pill. It causes them to draw incorrect conclusions. Also, people could believe it because of belief perseverance. Even though there are so many different types of evidence saying how diet pills really aren't very effective, people still buy them and choose to believe the commercials/media instead. The extraordinary principle is definitely the most useful for these claims.
Weight loss products do work sometimes for different reasons. They are more for obese individuals to help them. They work with a good amount of exercise and a proper reduced calorie diet. People are just so set on a dream body because of the impact of the media that they think the supplements are right for them.
- False weight loss claims: http://www.ftc.gov/opa/2003/12/weightlossrpt.shtm