CLA- Conjugated Linoleic Acid...
Some scientist did a study on 180 fat people. Half got this CLA, half got a placebo. At the end of a year, the CLA group lost an average of 9% body fat, while gaining 2% muscle mass. This without any change in diet, or exercise.
Just started taking it, I'll let you know how it works out in a year

. Course, I exercise and diet to, but it can't hurt.