Well, Jillian Michaels, who I honestly had a lot of respect for, really sold out and started endorsing diet pills. To her detriment.
The sad thing is, yesterday morning I was listening to one of her radio shows from 2007* and a girl called in asking about B-12 supplements and diet pills, which she had taken before to lose weight. Jillian recommended good old eating less and moving more. She said she's done research and from what she can tell taking B-12 won't hurt you since it doesn't become toxic in high amounts (like Vitamin A, for example). Then she said NO diet pills. No. No. No. Diet pills are a scam at best, and harmful at worst.
*Since she's off the air now, I'm listening to the podcasts from before I even knew she had a radio show.