It's horrible that this seems to be becoming the "hip" way to lose weight. The media touting the success stories but never the downside.
Cheri,
Good luck with your sister. I hope that for her safety she doesn't go through with it.
On a side note, another LC board that I used to read had a woman who was seriously considering the bypass surgery. She went to the meeting and they were discussing the meal options and plans for post surgery and they were giving them LC menus. I don't know if this is the norm with that or not. (BTW the woman figured "I'm on LC already, so why have a surgery just to go back on LC." She also told the other people at the meeting the wonders of just LCing and the clinic lost a lot of potential patients. )

Good luck!

Melissa