The Biggest Loser has been running on NBC since 2004. The show involves credible personal trainers, Jillian Michaels and Bob Harper, who say diet and exercise are all you need to lose weight. It turns out even reputable celebrity trainers are looking to cash in on weight loss supplements, even unproven ones. Off the show, and far from any website claiming to be affiliated with the show, Michaels and Harper both sell weight loss supplements. These are products not just sold under their names, these products have been cultivated by the stars who believe in their success.  Because supplements do not need to be approved by the FDA (The US Food and Drug Administration), Michaels and…