What is the difference between raspberry ketones and green coffee bean

Johnston, Lynsey Effects of raspberry ketone and green coffee bean extract on body mass and substrate utilisation. MSc R thesis, University of Glasgow. Dietary food supplements are becoming increasingly popular and while many claim to aid weight loss, there is limited evidence to support such claims. Raspberry ketone and green coffee bean extract have both been marketed for weight loss and are often sold in a combined form.

The aim of the present study was to test whether raspberry ketone and green coffee bean extract, when consumed separately and in combination, affect substrate utilisation and body composition.

Even then the best results will probably come with higher doses, which includes some risk for susceptible individuals. That brings us to Mehmet Oz, M. Oz Show. On June 17 Oz was called before a Senate subcommittee. The topic: misleading ads for weight-loss products. Senator Claire McCaskill focused on three he enthusiastically endorsed on his show: green coffee bean extract, garcinia cambogia, and raspberry ketones. If you've heard of them at all, it's probably because of him.

Do any of them work? Probably not. But to figure out why anyone would think they do, we turned to examine. Raspberry Ketones. What Dr. Oz called it: "the number-one miracle in a bottle to burn your fat. What it is: a chemical derived from raspberries used for scent and flavor in both cosmetics and food. What it does: The chemical structure is similar to that of synephrine and capsaicin, both of which have been shown to speed up human metabolism and thus burn more fat.

Does it work? In rodents, yes, but only in extremely high doses. And even those results weren't impressive. They simply showed that overfed rats given raspberry ketones gained less weight than overfed rats without the supplement. Not only is there no research showing a benefit to humans, it's hard to imagine there ever will be. Green Coffee Bean Extract. Researchers then concluded in the online journal Diabetes, Metabolic Syndrome, and Obesity: Targets and Therapy that green coffee bean extract could be an inexpensive and effective weight-loss nutraceutical.

Although Nagendran and his team did not document any side effects in the group the participated in their study, they recommend talking to your doctor before commencing green coffee bean extract.

If you're talking about mice, there's some proof to the weight-loss benefits of red raspberry ketones. But there have been no studies done on this weight-loss product in humans. The positive news on the nutraceutical came first from a study in by Japanese researchers, who found that red raspberry ketones were effective for reducing obesity in mice that were fed a high-fat diet.

A subsequent study done in Korea in confirmed that red raspberry ketones prevented obesity in male mice on a high-fat diet. The mechanism of action is thought to be an increase in the breakdown of fat cells. That may be great news for mice, but it says nothing about whether the product is safe or effective for people. Over-the-counter, natural weight-loss products like green coffee bean extract or red raspberry ketone are not approved or regulated by the FDA.

They might decrease your appetite, reduce fat absorption, or stimulate your metabolism, but "natural" does not mean safe, and valid scientific evidence for their effectiveness remains limited.