I've used it for several months now because I've read good stuff about it, and I AM thinner, have lost a little weight, etc., but I don't know if I can credit the CLA. I started doing a lot of little things all at once & don't know what did the trick - probably a combination of calorie cutting, wearing a pedometer, pilates, drinking green tea, CLA - who knows? Anyway, I dropped 5 lbs. and my "test" shorts are fitting loose now.