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KUSA - It's a new diet craze out there that at least one TV doctor is calling the "holy grail" for weight loss. But we wanted to look and see just how well studies say garcinia cambogia works as a diet pill.

Garcinia cambogia is an extract from the fruit of a tree native to Indonesia. This extract has been used for years for various medical purposes including use as a laxative, dewormer and even for rheumatism. But now it's being touted as a great way to lose weight.

Although there are many testimonials about how well it works as a diet aid studies don't support its effectiveness. A recent study done in 2011 that gathered data on multiple other trials where people participated in and were either given garcinia cambogia or a placebo were analyzed.

The researchers involved in this analysis, published in the Journal of Obesity, concluded that "Gastrointestinal adverse events were twice as common in the HCA (hydroxycitric acid, the active ingredient in the extract) group compared with placebo in one included study. It is concluded that the RCTs (randomized clinical trials) suggest that Garcinia extracts/HCA can cause short-term weight loss. The magnitude of the effect is small, and the clinical relevance is uncertain."

That basically means that although there was a short term weight loss noticed, it is unsure how long this weight loss will stick around. The researches involved in this study also went on to specify that the weight loss seen by those using the extract only amounted to 1 percent of their total body weight. In other words, someone weighing 200 pounds would only lose 2l pounds using the extract.

Weight loss that can be sustained is better attained through a life style change that incorporates eating better, smaller meals along with starting and maintaining a regular exercise program. Although many different substances, from garcinia cambogia to green coffee bean extract, have been touted as the newest weight loss pill we've yet to find the one that can help us lose and keep the weight off.