See the following from SupplementWatch, This is the "mixed bag" I was telling you about on CLA.
http://www.supplementwatch.com/suplib/supplement.asp?DocId=1084 "Of the small amount of human clinical data, an abstract presented at a strength and conditioning conference showed no differences between two groups of weight lifters on measures of body weight, fat mass or fat-free mass following a month of CLA supplementation. Another small study followed 10 subjects consuming 3-4 grams of CLA each day for three months and compared them to 10 subjects consuming a placebo. Results showed no difference in weight loss between CLA and placebo, but those talking CLA dropped somewhat more body fat. In one study of 17 healthy women, CLA supplements (3 grams/day) or a sunflower oil placebo for 64 days, resulted in no change in body weight, fat-free mass, fat mass, or percentage body fat. Likewise, CLA had no significant effect on energy expenditure, fat oxidation, or respiratory exchange ratio at rest or during exercise."