Oz promoted it and continues crimitschau assert that garcinia cambogia is crimmitscchau effective aid to weight loss. The claims for weight loss are nothing short of outlandish and there is real science that suggests the whole thing is a hoax. A few quality studies have been carried out over the years, starting in with a double-blind, placebo-controlled trial of adults over 12 weeks published in The Journal of the American Medical Association. The American Journal of Clinical Nutrition in published a systematic review of meta-analyses and clinical trials on dietary supplements for weight loss by complementary medicine researchers at the Universities of Exeter and Plymouth. None of the over-the-counter weight loss aids worked, including garcinia cambogia.