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Both groups also went on a high-fiber, low calorie diet. These were the results of the 12 week study, which was published in The Journal of The American Medical Association (a highly respected scientific journal): Heymsfield, et al. 1998 As you can see, both groups lost weight.
But the group taking Garcinia Cambogia extract actually lost less weight (3. 2 kg 7 pounds) than the placebo group (4.